首页英语词典constantconstant的意思

constant

英 ['kɒnst(ə)nt] 美['kɑnstənt]

adj. 不变的；恒定的；经常的
n. [数] 常数；恒量
n. (Constant)人名；(德)康斯坦特

GRETOEFLCET4TEM4IELTS考研CET6中高频词核心词汇

词态变化

复数: constants;

中文词源

constant 持续的

con-, 强调。-st, 站，词源同stand.

英英释意

1. a quantity that does not vary

2. a number representing a quantity assumed to have a fixed value in a specified mathematical context;: "the velocity of light is a constant"

英文词源

constant: constant: see consist
constant (adj.): late 14c., "steadfast, resolute," from Old French constant (14c.) or directly from Latin constantem (nominative constans) "standing firm, stable, steadfast, faithful," present participle of constare, from com- "together" (see com-) + stare "to stand," from PIE root *sta- "to stand" (see stet). Of actions and conditions from 1650s. Related: Constantly.
constant (n.): 1832 in mathematics and physics, from constant (adj.).

同义词辨析

continual, continuous, successive, constant, persistent

这些形容词均有"连续的，不断的"之意。

continual：强调重复或持续发生，但连续之间允许有间断。

continuous：语意最强，强调在时间和空间上没有间断。

successive：强调事物一个接一个地发生，无间断。

constant：多指习惯性的重复和不变的持续。

persistent：普通用词，可指不懈的努力，也可指任何连续不断或重复出现的事物。

faithful, loyal, constant, true

这些形容词均含有"忠实的"之意。

faithful：多指对人对事或对诺言、誓言的始终不渝，侧重在任何情况下都绝不改变。

loyal：一般指对祖国、领袖的忠诚或对事业、原则、誓言的忠实，不动摇。

constant：侧重指思想状态的稳定或信念的坚定，也指爱情或感情等的忠贞不渝。

true：侧重个人感情上的忠实和不动摇。

考试真题

In some cases, schools should help children find new, more grown-up ways of doing the same things that are constant sources of joy: making art, making friends, making decisions.

The result of constant muscle tension and stiffness of joints, many of them are avoidable, and simple flexibility training can prevent these by making muscles stronger and keeping joints lubricated (润滑 ).

People do it at the expense of everything that was a constant in their lives.

Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.

Some desalination plants exist where feasible, but they are costly to run and can need constant repairs.

No one should have to live with what a Texas mother described as constant stress, tension, even fear about money.

Are people suffering from gadget overload? Are they exhausted by the consumer equivalent of the brain fatigue—information overload—that is caused by constant updates of devices and online media?As you are probably aware, the latest job markets news isn’t good: Unemployment is still more than 9 percent, and new job growth has fallen close to zero.

By 1973, domestic US sources of oil were peaking, and the nation was importing more of its oil, depending on a constant flow from abroad to keep cars on the road and machines running.

By running constant deficits, it is dis-saving, even as households save more.

At heights of over 18000 feet, people may be climbing in a constant daze（恍惚）.

Constant complaints from passengers.

As constant travelers and parents of a 2-year-old, we sometimes fantasize about how much work we can do when one of us gets on a plane, undistracted by phones, friends, or movies.

For busy librarians and educators, finding instructions for projects, activities, sports, and games that children and teens will find interesting is a constant challenge, this guide is a time-saving, one-stop....

From the very beginning of school, we make books and reading a constant source of possible failure and public humiliation.

He has a constant urge to check for text messages; he checks his phone every five minutes! He's so addicted to it that he just can't stand the idea that there may be an important text.

Second, if other factors such as technology remain constant, economic growth and material expectations will fall well below recent standards and this could invite trouble.

Symptoms of it include a headache that is constant but not severe, and a pain at the back of your head and the neck.

They believe, for example, that their employees need constant supervision if they are to work effectively, or that decisions must be imposed from above without consultation.

Thus humans who lived a million years ago, despite their big brains and sharp stone tools, lived in constant fear of meat-eating animals.

Vanity is a constant; people will only start shopping more sustainably when they can’t afford not to.

It needs constant guardianship.

Constant health scares just end up with no one listening.

There's always a constant fear of falling behind everyone else on the socially perpetuated "race to the finish line," whether that be toward graduate school, medical school or a lucrative career.

Vanity is a constant; people will only start shopping more sustainability when they can't afford not to.

You may have a circle of friends who provide constant good humor, help and companionship.

实用场景例句

constant interruptions: 无休止的干扰

a constant stream of visitors all day: 整天络绎不绝的游客

Babies need constant attention.: 婴儿一刻也离不开人。

This entrance is in constant use.: 此入口经常使用。

travelling at a constant speed of 50 m.p.h.: 以每小时50英里的恒定速度行驶

She suggests that women are under constant pressure to be abnormally thin...: 她暗示说女性总是处在保持身材异常瘦削的压力之下。

Inflation is a constant threat...: 通货膨胀始终是个威胁。

The average speed of the winds remained constant.: 平均风速保持稳定。

In the world of fashion it sometimes seems that the only constant is ceaseless change...: 在时装界，有时似乎唯一永恒不变的东西就是不断的变化。

Two significant constants have been found in a number of research studies.: 若干研究已经发现了两个重要常量。

In history, change is constant.: 在历史上, 变化是不断的.

The market is in a constant state of flux.: 市场行情在不断变化.

Salaries are kept under constant review.: 薪金问题要一直不断审订.

The distortion of form is a constant in his painting.: 曲线型是他绘画的一贯特点.

I'm tired of your constant complaints; go away and leave me in peace!: 我讨厌你老是抱怨; 走开,让我安静点!

Her constant nagging provoked him.: 她不断地唠叨激怒了他.

I am weary of his constant complaints.: 我对他不断发牢骚感到厌烦.

The seeing eye dog was the blind man's constant companion.: 导盲犬是盲人的忠实伙伴.

The surface cratered with the constant dropping of water.: 表面因经常滴水而成坑.

Even great musicians require constant practice.: 即使是伟大的音乐家也需要不断的练习.

Constant rejection has sapped her will.: 不断的被拒绝逐渐使她丧失了信心.

Every member of the organization should be constant to its regulations.: 这组织的成员都得遵守规则.

In our world nothing seems constant.: 在我们这个世界上似乎没有东西是永恒不变的.

He laboured under the constant misapprehension that nobody liked him.: 他总是误认为没有人喜欢他.

Even outstanding musicians require constant practice.: 既使是好乐师也需经常练习.

His constant joking was beginning to annoy her.: 他不停地开玩笑，已开始惹她生气。

constant

词态变化

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