informal <非正式>
(一般作revs)
1- a revolution of an engine per minute（发动机的）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。
1.1
- 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)with obj.
1- 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）使（车）加速：
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。
1.1
- 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
figurative 〈喻〉he's revving 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。
词源
early 20th cent.: abbreviation of REVOLUTION.