speed

• vi. 超速，加速；加速，迅速前行；兴隆
• n. 速度，速率；迅速，快速；昌盛，繁荣
• vt. 加快…的速度；使成功，使繁荣
• n. (Speed)人名；(英)斯皮德

来自古英语 sped,繁荣，兴旺，来自 Proto-Germanic*spodiz,繁荣，兴旺，来自 PIE*spe,繁荣， 兴旺，词源同 prosper,desperate.后引申比喻义速度，迅速，快速，且成为主要词义，原词义 逐渐不再使用。

1. distance travelled per unit time

2. a rate (usually rapid) at which something happens;

"the project advanced with gratifying speed"

3. changing location rapidly

4. the ratio of the focal length to the diameter of a (camera) lens system

5. a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

speed

speed: [OE] Speed originally meant ‘success, prosperity’ – and when you wish someone Godspeed, you are wishing them ‘good fortune’. Largely, though, it is the secondary sense ‘quickness’, which first emerged in the late Old English period, that has survived to the present day. It has a surviving Germanic relative in Dutch spoed ‘quickness’, and it also has possible links with Old Church Slavonic speti ‘succeed’. It was first used as a slang term for ‘amphetamine’ in the mid 1960s.

speed (n.)

Old English sped "success, a successful course; prosperity, riches, wealth; luck; opportunity, advancement," from Proto-Germanic *spodiz (cognates: Old Saxon spod "success," Dutch spoed "haste, speed," Old High German spuot "success," Old Saxon spodian "to cause to succeed," Middle Dutch spoeden, Old High German spuoten "to haste"), from PIE *spo-ti-, from root *spe- (1) "to thrive, prosper" (cognates: Sanskrit sphayate "increases," Latin sperare "to hope," Old Church Slavonic spechu "endeavor," Lithuanian speju "to have leisure").

Meaning "rapidity of movement, quickness, swiftness" emerged in late Old English (at first usually adverbially, in dative plural, as in spedum feran). Meaning "rate of motion or progress" (whether fast or slow) is from c. 1200. Meaning "gear of a machine" is attested from 1866. Meaning "methamphetamine, or a related drug," first attested 1967, from its effect on users.

Speed limit is from 1879 (originally of locomotives); speed-trap is from 1908. Speed bump is 1975; figurative sense is 1990s. Full speed is recorded from late 14c. Speed reading first attested 1965. Speedball "mix of cocaine and morphine or heroin" is recorded from 1909.

speed (v.)

Old English spedan (intransitive) "to succeed, prosper, grow rich, advance," from the stem of speed (n.). Compare Old Saxon spodian, Middle Dutch spoeden "hasten," Old High German spuoton "to succeed, prosper," German sputen "make haste, hurry." Meaning "to go hastily from place to place, move rapidly" is attested from c. 1200. Transitive meaning "cause to advance toward success" is from mid-13c.; that of "send forth with quickness, give a high speed to" is first recorded 1560s; that of "to increase the work rate of" (usually with up) is from 1856. Meaning "drive an automobile too fast" is from 1908. Related: Speeded; sped; speeding.

haste, speed, hurry, dispatch

这些名词均含"迅速，急速"之意。

haste： 中性词，用作褒义指动作迅速，事情做得又快又好；作贬义用时，指做事急躁，行为鲁莽，得不到预期的结果。

speed： 多用于褒义，指行动敏捷快速，效果好。

hurry： 指急速从事某项活动或匆忙对付一件事情，含明显慌乱的意味。

dispatch： 指迅速、敏捷地结事某事，强调敏捷和及时。

speed, rate, velocity, pace

这些名词均含"速度，速率"之意。

speed： 普通用词，指单位时间内行进的固定速度或速率，也指可能达到的最高速度。

rate作"速度"讲时，与speed同义，可换用。作速率解时，指相对增长的速度，也指两种相比较而得出的标准速度。

velocity： 技术用词，指物体沿着一定方向运动时的速率。

pace： 普通用词，指步行的速度，常引申指活动的进度或生产率。

The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving—started to dull as early as age 27.

出自-2016年6月阅读原文

Steamships captured the North Atlantic passenger business from sail in the 1840s because of its much greater speed.

出自-2014年6月阅读原文

The high cost of steam and the lesser need for speed kept the majority of the world's ocean freight moving by sail until the early years of the 20th century

出自-2014年6月阅读原文

If you could move at the speed of light, your time would stand still.

出自-2011年6月听力原文

A search is now under way to confirm the suspected existence of particles of matter that move at a speed greater than light, and therefore, might serve as our passports to the past

出自-2011年6月听力原文

Earlier this morning, the office asked for the public's help to measure their speed results, saying consumers deserved to get the speeds they were promised.

2017年6月四级真题（第二套）阅读 Section A

Even when they stay on the right side of the law, Internet providers arouse customers' anger over bandwidth speed and cost.

2017年6月四级真题（第二套）阅读 Section A

If you've got a good car that can go at a high speed, then it's really nice to do that.

2016年6月四级真题（第二套）听力 Section B

Obviously, when driving through a residential area or where there's a school, you've got to have speed policemen.

2016年6月四级真题（第二套）听力 Section B

One early problem faced by Internet users was speed.

2017年12月四级真题（第三套）阅读 Section A

Or like speeding, it's very easy to put speed cameras in certain places.

2016年6月四级真题（第二套）听力 Section B

Speed, of course, is essential to the drive-through experience, and drive-throughs are hugely important to chains such as McDonald's, Burger king and Taco Bell.

2018年6月四级真题（第一套）听力 Section A

The team found that exerciser educed the speed of rapid eye movements by about 8%, preventing their ability to capture new visual information.

2017年6月四级真题（第三套）阅读 Section A

So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.

出自-2015年12月阅读原文

In the old days, we didn't much write like talking because there was no mechanism to reproduce the speed of conversation.

出自-2014年6月阅读原文

If the collapse of the rain forests speeds up dramatically,it could eventually release 3.5-5 billion metric tons of carbon into the atmosphere each year - making forests the leading source of greenhouse gases.

出自-2013年6月阅读原文

To increase the volume and the speed with which we move natural resources through the consumer economy to the junk pile or the waste heap.

出自-2013年12月听力原文

After repeating the question, she explained that the sufficient number of security guards would be working at peak hours to speed things along

出自-2012年12月听力原文

It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.

出自-2010年12月听力原文

Civilian aviation is being disrupted, not by the age-old desires for speed, romanticism and glamour, but by the pressing need to respond to a changing climate.

2019年6月六级真题（第二套）阅读 Section A

Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.

2017年12月六级真题（第二套）阅读 Section B

give the right computer a massive database of faces, and it can process what it sees—then recognize a face it's told to find—with remarkable speed and precision.

2018年6月六级真题（第一套）阅读 Section C

Manufacturers in America valued "speed to market" more than in other countries, the report found.

2015年12月六级真题（第二套）听力 Section C

Only a small fraction of the population was literate, but the production of books grew at an extraordinary speed.

2017年12月六级真题（第一套）听力 Section B

Protein can give them the edge they need to speed that process.

2019年12月六级真题（第二套）阅读 Section B

Protein can speed the repairing of damaged muscles.

2019年12月六级真题（第二套）阅读 Section B

So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once he is moving, it is hard to change his state of motion.

2015年12月六级真题（第一套）阅读 Section B

These fears are mostly exaggerated: as with hysteria about genetic modification, we humans are generally wise enough to manage these problems with speed and care.

2018年6月六级真题（第三套）阅读 Section A

They scanned the brains of teens and adults who were playing a virtual driving game designed to test whether players would brake at a yellow light or speed on through the crossroad.

2018年6月六级真题(第二套)阅读 Section B

A sudden stop can be a very frightening experience, especially if you are travelling at high speed.

2016年高考英语浙江卷（6月） 单项选择 原文

Animals are built of many different materials----skin, fat, and more----and light moves through each at a different speed.

2015年高考英语北京卷 阅读理解 阅读C 原文

But compared with previous studies, she finds the speed of breaking down in this one exciting.

2018年高考英语北京卷 阅读理解 阅读C 原文

China's high-speed railways are growing from 9,000 to 25,000 kilometers in the past few years.

2018年高考英语北京卷 单项填空 原文

Every time light moves into a material with a new speed, it bends and scatters.

2015年高考英语北京卷 阅读理解 阅读C 原文

For most of the last century, the car represented what it meant to be American—going forward at high speed to find new worlds.

2018年高考英语浙江卷 阅读理解 阅读C 原文

I could only have left it on the G9 bus, which was now speeding in the dark to some unknown station.

2019年高考英语天津卷 完形填空 原文

The tasters move down the line with surprising speed, tasting from a spoon and deciding what is a fair price for each tea.

2015年高考英语全国卷2 听力 原文

These include custom-made navigation tools, night vision systems and intelligent speed adaptations.

2017年高考英语全国卷3 阅读理解 阅读D 原文

We're looking at the benefits of systems which control their speed as a way of preventing that.

2017年高考英语全国卷3 阅读理解 阅读D 原文

Wales has introduced special low speed limits to minimize pollution.

2020年考研真题（英语二）阅读理解 Section Ⅱ

We unconsciously associate fast food with speed and impatience and carry those impulses into whatever else we're doing.

2013年考研真题（英语二）阅读理解 Section Ⅱ

He reduced speed and turned sharp left.

他减慢速度，向左急转。

牛津词典

The train began to pick up speed (= go faster) .

火车开始加速。

牛津词典

The car was gathering speed .

汽车逐渐加速。

牛津词典

a speed of 50 mph/80 kph

每小时50英里 / 80公里的速度

牛津词典

at high/low/full/top speed

以高 / 低 / 全 / 最高速

牛津词典

at breakneck speed (= fast in a way that is dangerous)

以不要命的速度

牛津词典

travelling at the speed of light/sound

以光速 / 音速行进

牛津词典

the processing speed of the computer

计算机的处理速度

牛津词典

This course is designed so that students can progress at their own speed.

这门课的设计思路是让学生自己掌握进度。

牛津词典

We aim to increase the speed of delivery (= how quickly goods are sent) .

我们力争提高送货速度。

牛津词典

The accident was due to excessive speed.

事故的原因在于速度过快。

牛津词典

She was overtaken by the speed of events (= things happened more quickly than she expected) .

事态发展迅速为她始料所不及。

牛津词典

(formal)A car flashed past them at speed (= fast) .

一辆汽车从他们身边疾驰而过。

牛津词典

shutter speeds

快门速度

牛津词典

a four-speed gearbox

有四挡的变速箱

牛津词典

a ten-speed mountain bike

十速山地自行车

牛津词典

the cost of bringing the chosen schools up to speed

使选定的学校达标所需的费用

牛津词典

He drove off at high speed...

他驱车飞驰而去。

柯林斯高阶英语词典

With this type of camera, the shutter speed is fixed...

对这类相机而言，快门的速度是固定的。

柯林斯高阶英语词典

In the late 1850s the speed of technological change quickened...

19 世纪 50 年代末期，技术变革的速度加快了。

柯林斯高阶英语词典

Each learner can proceed at his own speed.

每一位学习者都可以按自己的进度学习。

柯林斯高阶英语词典

Speed is the essential ingredient of all athletics...

速度是所有田径运动项目的关键要素。

柯林斯高阶英语词典

He put on a burst of speed...

他突然加速了。

柯林斯高阶英语词典

I was amazed at his speed of working.

他办事之麻利让我深感叹服。

柯林斯高阶英语词典

...the sheer speed of the unification process.

统一进程速度惊人

柯林斯高阶英语词典

Trains will speed through the Channel Tunnel at 186mph...

火车将以每小时 186 英里的速度快速穿过海峡隧道。

柯林斯高阶英语词典

The engine noise rises only slightly as I speed along.

我一路高速行驶时，发动机的噪音只提高了一点点。

柯林斯高阶英语词典

This man was not qualified to drive and was speeding.

这名男子没有驾驶资格，并且违章超速行驶。

柯林斯高阶英语词典

A day has been set aside to bring all councillors up to speed on the proposal...

已经确定了一个日子，届时将向所有的市政委员汇报有关该建议的最新进展情况。

柯林斯高阶英语词典

Those in charge deluded themselves they were up to speed.

那些负责人自以为掌握了最新情况。

柯林斯高阶英语词典