司机在绿灯亮起时猛踩油门加速。

The driver ___revved the engine when the traffic light turned green.

我们需要一些新点子来活跃这次会议的气氛。

We need some fresh ideas to ___rev up the meeting atmosphere.

发动机在3000转时表现最佳。

The engine performs best at 3000 ___revs.