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TOEFL BNC: 7072 COCA: 8018

acceleration

noun
/əkˌseləˈreɪʃn/
/əkˌseləˈreɪʃn/
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  1. [uncountable, singular] acceleration (in something) an increase in how fast something happens加速；加快
    • an acceleration in the rate of economic growth經濟增長加速
    Extra Examples
    • There has been a rapid acceleration in the growth of industry.工業一直在快速發展。
    • the acceleration of global warming全球變暖的加速
    Topics Change, cause and effectc2
    Oxford Collocations Dictionaryadjective
    • rapid
    • sudden
    • gradual
    • …
    preposition
    • acceleration in
    See full entry
  2. [uncountable] the rate at which a vehicle increases speed（車輛）加速能力，加速的幅度
    • a car with good acceleration加速性能良好的汽車
    • acceleration from 0–60 mph in 11.2 seconds11.2秒内從0-60英裏/小時加速
    • This model has the best acceleration of any available sports car.這款車的加速性能是現有跑車中最好的。
    Oxford Collocations Dictionaryadjective
    • fast
    • good
    • poor
    • …
    See full entry
  3. [uncountable] (physics物理) the rate at which the velocity (= speed in a particular direction) of an object changes加速度
    • acceleration caused by gravity重力引起的加速度
    Topics Physics and chemistryc1
    Oxford Collocations Dictionaryadjective
    • rapid
    • sudden
    • gradual
    • …
    preposition
    • acceleration in
    See full entry
    4. Word Originlate 15th cent.: from Latin acceleratio(n-), from accelerare ‘hasten’, from ad- ‘towards’ + celer ‘swift’.

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