Word · CEFR A2 · Frequency #225
power
能力;本领
ability or capacity to do something, including mental or physical capability
泛指做事或行动的能力
- 1.
The ability to do or undergo something.
做某事或经历某事的能力。
- 2.
A button of a computer, a video game console, or similar device, that when pressed, causes the device to be either shut down or powered up.
电源按钮
- 3.
possession of controlling influence
拥有支配性影响力
- 4.
The ability to coerce, influence, or control.
强迫、影响或控制的能力。
- 5.
(physics) the rate of doing work; measured in watts (= joules/second)
做功的速率;以瓦特(焦耳/秒)为单位
- 6.
Any of the elementary forms or parts of machines: three primary (the lever, inclined plane, and pulley) and three secondary (the wheel-and-axle, wedge, and screw).
机器的基本形式或部件:三种主要(杠杆、斜面和滑轮)和三种次要(轮轴、楔子和螺丝)。
- 7.
possession of the qualities (especially mental qualities) required to do something or get something done
拥有做某事所需的能力(尤指心智能力)
- 8.
A tractor.
拖拉机。
- 9.
A measure of the effectiveness that a force producing a physical effect has over time. If linear, the quotient of: (force multiplied by the displacement of or in an object) ÷ time. If rotational, the quotient of: (force multiplied by the angle of displacement) ÷ time.
衡量产生物理效果的力随时间的有效性。如果是线性的,商为:(力乘以物体的位移)÷时间。如果是旋转的,商为:(力乘以位移角度)÷时间。
- 10.
A product of equal factors (and generalizations of this notion): xn, read as "x to the power of n" or the like, is called a power and denotes the product x×x×⋯×x, where x appears n times in the product; x is called the base and n the exponent.
等因数的乘积(及其概念的推广):x的n次方,读作“x的n次方”或类似,称为幂,表示x×x×⋯×x的乘积,其中x在乘积中出现n次;x称为底数,n称为指数。
- 11.
Cardinality.
基数;集合中元素的个数。
- 12.
The probability that a statistical test will reject the null hypothesis when the alternative hypothesis is true.
统计检验在备择假设为真时拒绝原假设的概率。
- 13.
In Christian angelology, an intermediate level of angels, ranked above archangels, but exact position varies by classification scheme.
天使等级中的一级,位于大天使之上,具体位置因分类而异。
- 14.
A bonus point awarded for answering correctly before a certain part of the tossup is read.
在抢答题的某个部分读出之前正确回答所获得的加分。
权力;支配力;影响力;功率;电源键;电源开关;幂;乘方;基数;势
In use
The president has the power to veto laws.
This electric motor has a power of 2 kilowatts.
She used all her mental power to solve the puzzle.
the deterrent power of nuclear weapons
the power of his love saved her
danger heightened his powers of discrimination
have the power to do sth
此结构中 power 为不可数名词,表示能力或权利。
She has the power to change the rules.
她有权改变规则。
power over sb/sth
表示对某人或某事的控制或影响力。
Connections
Collocations
- come to power
- 上台执政,掌权
- The new government came to power in 2020.新政府于2020年上台执政。
- power plant
- 发电厂
- The power plant supplies electricity to the entire city.这座发电厂为整个城市供电。
- power failure
- 停电,电力故障
- There was a power failure during the storm.暴风雨期间发生了一次停电。
- will power
- 意志力
- She needed great will power to quit smoking.她需要巨大的意志力来戒烟。
- power struggle
- 权力斗争
- The company was torn apart by a power struggle between the directors.这家公司被董事之间的权力斗争搞得四分五裂。
- power tool
Learner notes
Memory Tip
想象一个插座插上电,电器立刻有了动力,这就是 power(电力/能力)带来的力量。
Context & Register
语域:neutral 常见场景:日常生活、学术语境 作为名词时,通常中性,多用于一般场合,如谈论能力、权力或电力等。
Pronunciation & Spelling
All listed words share the stressed vowel /aʊ/. Words ending in "ower" (flower, tower, shower, bower, cower) rhyme exactly with "power" (same vowel + schwar). "Cow" has the same vowel but no final /ər/, so it is a near rhyme. Words like "lower" (meaning less high) have /oʊ/ and do not rhyme.
High-value vocabulary
该词属于 Oxford 核心词汇,值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 5,建议结合例句记忆,而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.