Don't rev up the engine too fast.

不要使发动机转速太快。

youdao

The coal mines in North China have to rev up their outputs to meet ever-increasing demand.

华北各煤矿必须提高产量以满足日益增长的需要。

youdao

Stimulants are substances that rev up the nervous system, increasing heart rate, blood pressure, energy, breathing and more.

兴奋剂指的是可以加快神经系统活动，增加心率、血压、精力和呼吸等等的物质。

youdao

Both said that monetary and fiscal authorities should outline how they will step back from the rev-it-up policies since the global banking crisis, in order to achieve sustained, noninflationary growth (i.e. no bubbles).

FORBES: Deficits hinder investment? 'Ludicrous'

The current uncertainty, it adds, causes wind production to fall off only to rev back up when lawmakers re-institute the benefit.

FORBES: Wind Energy: Twisting and Turning and Getting Bent out of Shape

Drivers rev the motors of their beat-up vehicles, shouting in Chinese and Mongol for passengers to board for a 300-yard drive to the Chinese immigration center and then another few miles to the Mongolian equivalent.

WSJ: A Popular Side Trip for Foreigners in China: Visa Runs