rev

rev
(informal)(非正式)
noun
  1. (一般作 revs)a revolution of an engine per minute
    （发动机）每分钟转速
    an engine speed of 1,750 revs.
    每分钟1,750转的发动机转动速度。
    ■an act of increasing the speed of revolution of a vehicle's engine by pressing the accelerator, especially while the clutch is disengaged
    加快转速
(revved, revving)
  1. [with obj.]increase the running speed of (an engine) or the engine speed of (a vehicle) by pressing the accelerator, especially while the clutch is disengaged
    加快（发动机）转速；（踩油门）加快（车）速
    he got into the car, revved up the engine and drove off.
    他钻进车里，把车发动起来，然后开车走了。
    [no obj.]I revved up enthusiastically.
    我疯狂地加快车速。
    ■[no obj.](of an engine or vehicle) operate with increasing speed when the accelerator is pressed, especially while the clutch is disengaged
    （发动机）加快转速；（车辆）加速
    he could hear the sound of an engine revving nearby.
    他能听到附近的发动机加速运转的声响。
    he'srevving up for next week's World Cup game.
    他正在加紧为下个星期的世界杯比赛做准备。
语源
  1. early 20th cent.: abbreviation of revolution
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