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TOEFL BNC: 7072 COCA: 8018
acceleration
noun /əkˌseləˈreɪʃ(ə)n/
  1. 1
    [singular/uncountable] an increase in the rate at which something happens, changes, or grows 加快;增速

    Economic growth slowed down sharply after three months of acceleration. 经济增长在经过3个月的加速后急剧减速了。

    acceleration of :

    The report calls for an acceleration of reforms in the prison service. 报告呼吁加快监狱系统的改革进程。

     Synonyms and related words
  2. 2
    [U] the power of a vehicle to increase its speed (车辆的)加速性能

    a sports car with impressive acceleration 加速性能极好的跑车

     Synonyms and related words
  3. 3
    [U] science the increase in speed of a moving object (移动物体的)加速度
     Synonyms and related words
    Units for measuring speed of movement: acceleration, knot, kph...

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