term

英 [tɜːm] 美[tɝm]
  • n. 术语;学期;期限;条款
  • vt. 把…叫做
  • n. (Term)人名;(泰)丁

CET4TEM4IELTS考研CET6高频词基本词汇

词态变化


复数: terms;第三人称单数: terms;过去式: termed;现在分词: terming;

中文词源


term 术语,措辞,学期,期限

来自 term-,边界,终端,引申词义术语,措辞,期限等。比较 define,finish.

英英释意


1. a word or expression used for some particular thing;
"he learned many medical terms"
2. a limited period of time;
"a prison term"
"he left school before the end of term"
3. (usually plural) a statement of what is required as part of an agreement;
"the contract set out the conditions of the lease"
"the terms of the treaty were generous"
4. any distinct quantity contained in a polynomial;
"the general term of an algebraic equation of the n-th degree"
5. one of the substantive phrases in a logical proposition;
"the major term of a syllogism must occur twice"
6. the end of gestation or point at which birth is imminent;
"a healthy baby born at full term"
7. (architecture) a statue or a human bust or an animal carved out of the top of a square pillar; originally used as a boundary marker in ancient Rome

英文词源


term
term: [13] The etymological notion underlying the word term is of a ‘limit’ or ‘boundary’, and hence of an ‘end’. It comes via Old French terme from Latin terminus ‘boundary, limit’, which was also borrowed into Welsh as terfyn ‘boundary’ and directly into English in the 17th century as terminus ‘finishing point’ (it was first applied to railway stations in the 1830s).

The notion of a ‘time limit’ led to its use for a ‘period of time’, the sense in which it was first used in English; the particular application to a ‘period in which a school, law court, etc is in session’ emerged in the mid 15th century. The sense ‘word or phrase expressing a particular idea’ arose (through Greek influence) in medieval Latin from the concept of ‘limiting’ the application of an expression.

Also from Latin terminus come English determine, exterminate [16], terminal [15], terminate [16], and terminology [19].

=> determine, exterminate, terminology, terminus
term (n.)
c. 1200, terme "limit in time, set or appointed period," from Old French terme "limit of time or place, date, appointed time, duration" (11c.), from Latin terminus "end, boundary line," in Medieval Latin "expression, definition," related to termen "boundary, end" (see terminus). Old English had termen "term, end," from Latin. Sense of "period of time during which something happens" first recorded c. 1300, especially of a school or law court session (mid-15c.).

The meaning "word or phrase used in a limited or precise sense" is first recorded late 14c., from Medieval Latin use of terminus to render Greek horos "boundary," employed in mathematics and logic. Hence in terms of "in the language or phraseology peculiar to." Meaning "completion of the period of pregnancy" is from 1844. Term-paper in U.S. educational sense is recorded from 1931.
term (v.)
"to give a particular name to," 1550s, from term (n.). Related: Termed; terming.

同义词辨析


term, semester

这两个名词均有"学期"之意。

term和semester作"学期"解时,其主要差别在于使用地区的不同。term多用于英国,semester主要在美国、德国使用。

word, vocabulary, language, term, lexicon

这些名词均有"文字,词,语言"之意。

word: 普通用词,指语言的最小单位的单词、字,也可指话、整句话或一段话。

vocabulary: 集合名词,指词汇、语汇或词汇量。

language: 普通用词,指国家、民族或种族内部使用,已经系统化的语言。

term: 指有特定意义的词,词语或术语。

lexicon: 指某种语言、某人或某一知识领域的全部词汇。

考试真题


We have presidential candidates running for their first term in office at age 68, 69 and 74.

出自-2017年6月阅读原文

The report refers to this as the coming of the 18-hour city, and uses the term to refer to cities like Houston, Austin, Charlotte, and Nashville, which are positioning themselves as highly competitive, in terms of livability, employment offerings, and recreational and cultural facilities.

出自-2017年6月阅读原文

This is Aesop, the fabulist ( ' , 寓言家 ), the man of these charming little tales, often told in terms of animals and animal relationships, He says.

出自-2016年6月阅读原文

The Greeks are always concerned about boxing themselves in, in terms of convictions ( ' , 信念 ), he says.

出自-2016年6月阅读原文

In a multi-state study of assisted living , for instance, University of North Carolina researchers found that a host of variables—the facility's type, size or age; whether a chain owned it; how attractive the neighborhood was—had no significant relationship to how the residents fared in terms of illness, mental decline, hospitalizations or mortality.

出自-2016年6月阅读原文

In post-war Japan, the economy wasn’t doing so great, so you couldn’t get everyday-use items like household cleaners, says Lisa Katayama, author of Urawaza, a book named after the Japanese term for clever lifestyle tips and tricks, So people looked for ways to do with what they had.

出自-2016年6月听力原文

It is necessary to use terms other than gamification for some professions.

出自-2016年12月阅读原文

A gamification strategy that is not sufficiently thought through or well tailored to its players may engage people for a little while, but it will not motivate people in the long term.

出自-2016年12月阅读原文

To help quantify ( ' , 量化 ) the costs of a poor diet, I recently tried to estimate this impact in terms of a most famous food, the burger ( ' , 汉堡包 ).

出自-2015年12月阅读原文

They backslide after serving their terms in prison.

出自-2015年12月阅读原文

Genuine criticism creates a precious opening for an author to become better on his own terms—a process that is often extremely painful, but also almost always meaningful.

出自-2015年12月阅读原文

Less profits in the short term.

出自-2013年6月阅读原文

Why couldn't Britain compete with some of its neighbouring countries in terms of food in the post-war decades?

出自-2011年6月阅读原文

It is invalid in terms of methodology

出自-2011年6月阅读原文

Excessive Internet use should be defined not by the number of hours spent online but "in terms of losses," said Maressa Orzack, a Harvard University professor.

出自-2010年6月阅读原文

They also took terms in watering, weeding and maintaining the plot.

出自-2013年6月听力原文

Now, however, recent developments in electric vehicle technology mean they can match conventional petrol engines in terms of performance and safety

出自-2013年6月听力原文

He sets the term for everyone else.

出自-2010年6月听力原文

Francesca Haass, a senior at middlebury, says, "I find the in-class ones are more stressful in the short term, but there is immediate relief as you swallow information like mad, and then you get to forget it all."

2017年12月四级真题(第一套)阅读 Section B

Research now shows that regular quizzes, short essays, and other assignments over the course of a term better enhance learning and retention.

2017年12月四级真题(第一套)阅读 Section B

Take-homes require thoughtful engagement which can lead to longer term stress as there is never a moment when the time is up?

2017年12月四级真题(第一套)阅读 Section B

The term is coming to an end.

2017年12月四级真题(第一套)听力 Section B

The term kleptoplasty is used to describe the practice of using hiJacked genes to create nutrients from sunlight.

2019年12月四级真题(第三套)阅读 Section C

The-doctors response to the question of whether or not dogs can fall in love like humans do was a straight "Of course!" He went on to say that if love is defined as a long term commitment meaning dogs seek one another out when they're apart, they're happy

2019年12月四级真题(第二套)听力 Section C

Thoughts turn first to some sort of global statistic, some indicator which would rate the wealth of nations in both economic and environmental terms and show a relationship between the two.

出自-2016年6月阅读原文

The good news is that a bill just approved by the House and a bill approved by the Senate Finance Committee would implement or test many reforms that should help slow the rise in medical costs over the long term.

出自-2016年6月阅读原文

The Millennium Ecosystem Assessment, a vast four-year global study which reported its initial conclusions earlier this year, found reasons to believe that managing ecosystems sustainably—working with nature rather than against it—might be less profitable in the short term, but certainly brings long-term rewards.

出自-2016年6月阅读原文

Of course, such growth may not persist in the long term—which is what Mr.

出自-2016年6月阅读原文

a basis for explaining human genetic diversityan aid to understanding different populationsan explanation for social and cultural differencesa term to describe individual human characteristicsmodern genetics research is likely to fuel racial conflictsrace is a poorly defined marker of human genetic diversityrace as a biological term can explain human genetic diversitygenetics research should consider social and cultural variablesit is absolutely necessary to put race aside in making diagnosisit is important to include social variables in genetics researchracial categories for genetic diversity could lead to wrong clinical predictionsdiscrimination against black people may cause negligence in clinical treatmentThey be more precise with the language they use.

出自-2016年12月阅读原文

They refrain from using politically sensitive terms.

出自-2016年12月阅读原文

So what other variables could be used if the racial concept is thrown out? Yudell said scientists need to get more specific with their language, perhaps using terms like ancestry or population that might more precisely reflect the relationship between humans and their genes, on both the individual and population level.

出自-2016年12月阅读原文

Racial terms are still useful in certain fields of study.

出自-2016年12月阅读原文

In a study published last year, psychologists coined the term workplace telepressure to describe an employee's urge to immediately respond to emails and engage in obsessive thoughts about returning an email to one's boss, colleagues or clients.

出自-2016年12月阅读原文

As technology ( ' , and with it, work emails) seeps ( ' , 渗入 ) into every aspect of our lives, work-life balance has become an almost meaningless term.

出自-2016年12月阅读原文

In practical terms, the new guidelines being develop could result in doctors choosing one drug over another for cost reasons or even deciding that a particular treatment — at the end of life, for example — is too expensive.

出自-2015年12月阅读原文

By the late 1960s, that term was overtaken by Black.

出自-2015年12月阅读原文

And then, at a press conference in Chicago in 1988, Jesse Jackson declared that African American was the term to embrace.

出自-2015年12月阅读原文

A new term is created to address African AmericansAll ethnic groups share the nation's continued progress.

出自-2015年12月阅读原文

A 2001 study cataloged all the ways in which the term Black carried connotations ( ' , 涵义 ) that were more negative than those of African American.

出自-2015年12月阅读原文

In terms of efficiency and cleanness, buses, trains and other form of public or mass transportation are superior to the private automobile.

出自-2015年12月听力原文

A key process in interpersonal interaction is that of social comparison, in that we evaluate ourselves in terms of how we compare to others.

出自-2012年12月阅读原文

The child of tomorrow, I realized, may actually be ahead of us, in terms of sensing not what is new, but what is essential

出自-2012年12月阅读原文

When a noted leader on the art of management, Peter Drucker, coined the phrase "Management is doing things right; leadership is doing the right things," he was seeking to clarify the distinctions he associates with the terms.

出自-2011年12月阅读原文

What does the author think of UK universities in terms of commercialisation

出自-2011年12月阅读原文

In its 1994 report, the World Bank argued that the current pension system in most countries could not be sustained in the long term.

出自-2010年12月阅读原文

not be sustained in the long term

出自-2010年12月阅读原文

The 94 I received this term does not reflect the hard work that I put into this course.

出自-2010年6月阅读原文

One fifth of them were on bad terms with their sisters and brothers.

出自-2014年6月听力原文

Well, the Pistoia job pays much better in the short term.

出自-2010年6月听力原文

Throughout the body of the speech, Juan dealt only with the basic mechanics of the earthquakes and carefully avoid technical terms.

出自-2010年6月听力原文

A 2001 study cataloged all the ways in which the term " Black " carried connotations 涵 义 that were more negative than those of " African American. "

2015年12月六级真题(第一套)阅读 Section C

And then, at a press conference in Chicago in 1988, Jesse Jackson declared that " African American " was the term to embrace.

2015年12月六级真题(第一套)阅读 Section C

As technology and with it, work emails seeps (渗入) into every aspect of our lives, work-life balance has become an almost meaningless term.

2016年12月六级真题(第一套)阅读 Section B

By the late 1960s, that term was overtaken by "Black".

2015年12月六级真题(第一套)阅读 Section C

I use the term "low-tier" cautiously, because GSU is a well-regarded research institution that attracts high quality professors and faculty from all over the country.

2018年6月六级真题(第三套)阅读 Section B

In a study published last year, psychologists coined the term "workplace telepressure" to describe an employee's urge to immediately respond to emails and engage in obsessive thoughts about returning an email to one's boss, colleagues or clients.

2016年12月六级真题(第一套)阅读 Section B

It's a simple term that encapsulates the fact that relationships at work can reasonably be non-intimate, inconsequential, unimportant and even, dare I say it, disposable or substitutable.

2019年6月六级真题(第三套)阅读 Section C

Maintaining relationships over the long term takes effort.

2019年6月六级真题(第三套)阅读 Section C

The good news is that a bill just approved by the House and a bill approved by the Senate finance Committee would implement or test many reforms that should help slow the rise in medical costs over the long term.

2016年6月六级真题(第二套)阅读 Section B

The millennium Ecosystem Assessment, a vast four-year global study which reported its initial conclusions earlier this year, found reasons to believe that managing ecosystems sustainably—working with nature rather than against it—might be less profitable

2016年6月六级真题(第三套)阅读 Section B

They may be able to handle a drought of some length, and many people use the term "drought tolerant" to describe such plants, but they never actually stop needing to consume water, so Farrant prefers to call them drought resistant.

2018年6月六级真题(第一套)阅读 Section B

A free schedule of events for each term is available by calling the box office at 556-4183.

2016年高考英语全国卷3 阅读理解 阅读A 原文

Another way of setting realistic goals is to analyze your short and long term objectives, keeping in mind your beliefs, values and strengths.

2019年高考英语全国卷2 阅读理解 七选五 原文

Arts as an economic driver our communities benefit from arts in terms of economy.

2018年高考英语江苏卷 阅读理解 填空题 原文

As a result it's likely to see a rise in the size of its working-age population and to witness strong economic growth over the longer term.

2017年高考英语江苏卷 任务型阅读 原文

As their world expanded, she said, children compared themselves to others online in a way that was "hugely damaging in terms of their self-identity, in terms of their confidence, but also in terms of their ability to develop themselves".

2018年高考英语江苏卷 阅读理解 阅读D 原文

But unlike school friends, 16-year-old Sarah is not spending half-term resting.

2017年高考英语全国卷3 语法填空 原文

Conclusion· With a large brain, human beings beat other beings in terms of intelligence.

2019年高考英语江苏卷 阅读理解 任务型阅读 题设

El nifio, a Spanish term for "the Christ child", was named by south American fisherman who noticed that the global weather pattern.

2016年高考英语江苏卷 阅读理解 阅读C 原文

Finally, I'd like to remind you that there will be several parent's evenings during this term.

2015年高考英语北京卷 听力 原文

Five years ago, when I taught art at a school in seattle, I used tinkertoys as a test at the beginning of a term to find out something about my students.

2016年高考英语全国卷2 阅读理解 阅读B 原文

Food webs may be dominated by many weak links because that arrangement is more stable over the long term.

2019年高考英语天津卷 阅读理解 阅读C 原文

For example, when I'm writing a textbook, it has become second nature to check a dozen definitions of a key term, which helps me dig into the core and understand its meaning.

2016年高考英语江苏卷 阅读理解 任务型阅读 原文

I still have three terms to go until I'm done.

2016年高考英语全国卷1 听力 原文

I'd like to start our new term with a few notices.

2015年高考英语北京卷 听力 原文

If properly administered, a kitemark on terms and conditions could help people know what exactly they are signing up to.

2016年高考英语上海卷 阅读理解 阅读C 原文

I'm glad this is my last term here, though.

2016年高考英语全国卷1 听力 原文

In a society that tends to measure everything in terms of dollars and cents, we learn form a young age to consider the costs of our decisions in financial terms.

2015年高考英语浙江卷 完形填空 原文

Instead, he says, firms should provide a plain-English version of their terms.

2016年高考英语上海卷 阅读理解 阅读C 原文

It is to be had on no other terms.

2015年高考英语江苏卷 阅读理解 阅读D 原文

It provides a dozen definitions of a key term for us to find the heart/core of the matter.

2016年高考英语江苏卷 阅读理解 阅读D 原文

Make plans for the new term.

2015年高考英语全国卷2 阅读理解 阅读C 选项

Miss Chen, I was wondering if you could find out how I did on the middle-term exam?

2015年高考英语上海卷 听力 原文

My husband was ordered out on a long-term duty, and I was left in a tiny shack alone.

2016年高考英语浙江卷(6月) 完形填空 原文

Now, I'll talk about some of the activities for this term.

2015年高考英语北京卷 听力 原文

"NUS statistics show that over 40% of students are forced to work during term time and the figure increases to 90% during vacating periods, " he said.

2015年高考英语全国卷2 阅读理解 阅读C 原文

Other European countries laid down a similar requirement for immigrants, and some terms are even tougher.

2017年高考英语浙江卷(6月) 阅读理解 阅读C 原文

Project managers evaluate the performance of the team members in terms of what they produce for projects, rather than the amount of time they spend on them.

2016年高考英语上海卷 完形填空 原文

Surely small towns and big cities both have some problems in terms of transport.

2014年高考英语全国卷1 听力 原文

Thank you for your attention, and enjoy your new term.

2015年高考英语北京卷 听力 原文

The following term, I registered for an asl class.

2017年高考英语全国卷1 完形填空 原文

The trend, then, was toward the "penny paper"--a term referring to papers made widely available to the public.

2019年高考英语全国卷3 阅读理解 阅读C 原文

The writer advises users of social media to read the terms and conditions even if there is a kitemark.

2016年高考英语上海卷 阅读理解 阅读C 题设

This new six-month trial will help US find out if we can influence customers to stand on both sides in the long term.

2016年高考英语上海卷 阅读理解 阅读D 原文

Translated into high school terms, this means that if everybody you hang around with is laughing at what John wore or what jane said, then you can bet that wearing or saying something similar will get you the same kind of negative attention.

2016年高考英语浙江卷(6月) 阅读理解 阅读A 原文

“So few authors have brains enough or literary gift enough to keep their own end up in journalism,” Newman wrote,“that I am tempted to define‘journalism’ as‘a term of contempt applied by writers who are not read to writers who are'.

出自-2010年考研阅读原文

To filter out what is unique from what is shared might enable us to understand how complex cultural behavior arose and what guides it in evolutionary or cognitive terms.

出自-2012年考研翻译原文

In many respects, the dearth of moral purpose frames not only the fact of such widespread phone hacking but the terms on which the trial took place.

出自-2015年考研阅读原文

But in the medium term,middle-class workers may need a lot of help adjusting.

出自-2018年考研阅读原文

Britain's new rule is a reminder to bankers that society has an interest in their performance, not just for the short term but for the long term.

2019年考研真题(英语一)阅读理解 Section Ⅱ

But historically we have spent about 12 percent of our days contemplating the longer term.

2013年考研真题(英语二)阅读理解 Section Ⅱ

But in the medium term, middle-class workers may need a lot of help adjusting.

2018年考研真题(英语一)阅读理解 Section Ⅱ

It was only after "toddler" became a common shoppers' term that it evolved into a broadly accepted developmental stage.

2012年考研真题(英语二)阅读理解 Section Ⅱ

So few authors have brains enough or literary gift enough to keep their own end up in journalism. Newman wrote that "I am tempted to define ‘journalism' as a term of contempt applied by writers who are not read to writers who are."

2010年考研真题(英语一)阅读理解 Section Ⅱ

Their success may be determined by a suit related to this issue, brought by the Mayo Clinic, which the Supreme Court will hear in its next term.

2012年考研真题(英语二)阅读理解 Section Ⅱ

These gave banks more freedom to use models to value illiquid assets and more flexibility in recognizing losses on long- term assets in their income statements.

2010年考研真题(英语一)阅读理解 Section Ⅱ

While these measures would be welcome in the short term, we must face up to the fact that the existing £4.5bn programme of grants to fund new affordable housing, set to expire in 2015, is unlikely to be extended beyond then.

2014年考研真题(英语二)阅读理解 Section Ⅱ

Yet officials also hope for a much larger benefit: more long term decision-making not only by banks but also by all corporations, to build a stronger economy for future generations.

2019年考研真题(英语一)阅读理解 Section Ⅱ

词组搭配


come to terms with

come to accept (a new and painful or difficult event or situation); reconcile oneself to

向…屈服;对…让步;与…妥协;与…和解;和…达成协议

she had come to terms with the tragedies in her life.

她对生活中的不幸已经逆来顺受了。

in terms of (或 in —— terms)

with regard to the particular aspect or subject specified

根据,按照; 在…方面,从…方面(说来)

replacing the printers is difficult to justify in terms of cost.

从成本方面很难说更换打印机是合算的。

sales are down by nearly 7 per cent in &B{real terms}.

实际上销售额降低了近7个百分点。

the long/short/medium term

used to refer to a time that is a specified way into the future

长/短/中期

on terms

in a state of friendship or equality

友好,关系良好;在平等地位上

on —— terms

in a specified relation or on a specified footing

处于…关系(或状态)

we are all on friendly terms.

我们都相处友好。

terms of reference

(Brit.)the range or scope established for an inquiry or discussion

(英)受权调查范围;受委托事项

in terms of

As measured or indicated by; in units of

用…衡量或表示;用…的措辞

distances expressed in terms of kilometers as well as miles; cheap entertainment, but costly in terms of time wasted.

用公里和英里来表示距离;低廉的娱乐,但就浪费的时间来说却极昂贵

In relation to; with reference to

根据:按照;就…而言

“facilities planned and programmed in terms of their interrelationships, instead of evolving haphazardly”(&b{Wharton Magazine})

“按照其内在的关系来营造设施以防止其产生灾难性的进展”(&b{沃顿杂志})

实用场景例句


a technical/legal/scientific, etc. term
技术、法律、科学等术语

牛津词典

a term of abuse
咒骂用语

牛津词典

‘Register ’ is the term commonly used to describe different levels of formality in language.
“语域”是一个术语,通常用以描述语言中用语的正式程度。

牛津词典

Our goods compete in terms of product quality, reliability and above all variety...
我们的产品在质量、可靠性,尤其是品种方面颇具竞争力。

柯林斯高阶英语词典

Paris has played a dominant role in France, not just in political terms but also in economic power.
不仅仅在政治方面,而且在经济实力上巴黎在法国也都一直处于支配地位。

柯林斯高阶英语词典

The video explains in simple terms how the new tax works...
录像用简单易懂的语言解释了新税法。

柯林斯高阶英语词典

The document is expressed in terms that are readily understood and agreed.
文件用语浅显易懂,让人易于接受。

柯林斯高阶英语词典

Myocardial infarction is the medical term for a heart attack.
心肌梗死是心脏病的医学用语。

柯林斯高阶英语词典

He had been termed a temporary employee...
他被称作临时雇员。

柯林斯高阶英语词典

He termed the war a humanitarian nightmare.
他称这场战争是一场人道主义噩梦。

柯林斯高阶英语词典

...the summer term.
夏季学期

柯林斯高阶英语词典

...the last day of term.
学期最后一天

柯林斯高阶英语词典

Felipe Gonzalez won a fourth term of office in Spain's election.
费利佩·冈萨雷斯在西班牙选举中获得第 4 次连任。

柯林斯高阶英语词典

...a 12 month term of service...
为期 12 个月的任职期

柯林斯高阶英语词典

Offenders will be liable to a seven-year prison term.
违犯者可判处 7 年监禁。

柯林斯高阶英语词典

Premiums are guaranteed throughout the term of the policy.
在保单有效期内,所缴纳的保险费是有保障的。

柯林斯高阶英语词典

That makes her the first TV presenter to work the full term of her pregnancy...
那样,她就成了首个怀孕期间一直上班的电视节目主持人。

柯林斯高阶英语词典

Women over 40 seem to be just as capable of carrying a baby to term as younger women.
年过 40 的女性好像和年轻女性一样能够怀孕到足月。

柯林斯高阶英语词典

...the terms of the Helsinki agreement...
《赫尔辛基协议》的条款

柯林斯高阶英语词典

Mayor Rendell imposed the new contract terms.
伦德尔市长强加了新的合同条款。

柯林斯高阶英语词典

She had come to terms with the fact that her husband would always be crippled.
她只好接受了丈夫将终生残疾这个现实。

柯林斯高阶英语词典

I had at last found a sport where I could compete on equal terms with able-bodied people...
我终于发现了一个可以和体格健全的人平等竞争的体育项目。

柯林斯高阶英语词典

The focus was on women gaining access to work on the same terms as men.
核心问题在于女性应与男性享有平等的就业机会。

柯林斯高阶英语词典

Madeleine is on good terms with Sarah...
马德琳和萨拉相处很好。

柯林斯高阶英语词典

We shook hands and parted on good terms.
我们握了握手,友好地告别。

柯林斯高阶英语词典

The agreement should have very positive results in the long term...
从长远来看,这个协议将会产生非常积极的影响。

柯林斯高阶英语词典

In the short term, chemical sprays are clearly an effective way to control pests...
从短期来看,喷洒化学药品显然能有效控制虫害。

柯林斯高阶英语词典

They will sign the union treaty only on their terms.
只有同意他们的条件,他们才会在联盟条约上签字。

柯林斯高阶英语词典

United should be thinking in terms of winning the European Cup...
联队应该在考虑要赢得欧洲杯。

柯林斯高阶英语词典

She was thinking in terms of a career.
她在考虑干一番事业。

柯林斯高阶英语词典