Turn off the light!

把那灯关了！

youdao

You don't need a light switch or a light bulb or an iPhone app to turn something on or off.

你不需要电灯开关、灯泡或苹果手机应用程序来打开或关闭某些东西。

youdao

It's bedtime. Let's turn off the light.

到就寝时间了。我们关灯吧。

youdao

They used light-sensitive molecules to turn on and off nerve cells in the deep brain structure of mice.

VOA: special.2009.04.07

Many of these gadgets can be used to turn off a check engine light, which can be a money-saver if you avoid a trip to the garage simply because the gas cap was loose, a common cause of check engine alerts.

WSJ: Diagnostic Tools to Unleash Your Inner Mechanic