Revving the engine too much can damage the car.

过度加速发动机会损坏汽车。

She was revving the car engine to impress her friends.

她在加速发动机以给朋友们留下深刻印象。

He enjoys revving his motorcycle engine before a race.

他喜欢在比赛前加速发动机他的摩托车。

The mechanic was revving the engine to diagnose the problem.

机械师在加速发动机以诊断问题。

You should monitor the tachometer to avoid over-revving the engine.

你应该监控转速表以避免发动机过度运转。

The sound of revving engines filled the air at the car show.

在车展上，加速发动机的声音充满了空气。

A fighter plane is revving up on the hanger apron.

飞机库前面的停机坪上,一架战斗机正在启动.

China's car market used to run like a high-revving engine.

中国的汽车市场发展速度曾如同飞速转动的引擎。

But that does not mean that revving up output is a bad idea.

不过，此举并不意味着增加产量是一个坏主意。

Revving the engine before turning it off may reduce fuel economy.

在发动机未关闭时空踩油门会降低燃油经济性。