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

The chkconfig command can also be used to switch any service off or on.

chkconfig 命令还可以用来切换任何一个服务的开或关。

youdao

Many genes help to prevent tumours from growing, but disruption of the epigenome can switch these protective genes off by accident.

许多基因有助于防止肿瘤的生长，但表观基因组遭到破坏时，可能会碰巧把这些具有保护作用的基因切换到关闭状态。

youdao

This momentary switch-off between the sun and the poet is just one of this poem's many substitutions.

这种太阳和诗人之间,短暂的互换只是这首诗众多替换中的一个。

耶鲁公开课 - 弥尔顿课程节选

So now it's not just that the on-off switch is stuck in off, the brain's no longer capable of engaging in these higher order P-functions.

所以现在看来就不是开关被卡住，大脑已经不再有能力,实行这些高级的人格功能。

耶鲁公开课 - 死亡课程节选

Of course, to turn the on-off switch on is harder when somebody's in a coma.

当然要开启这个开关难度更大,当人陷入昏迷。

耶鲁公开课 - 死亡课程节选

The earpiece has an on-off switch, a three-stage volume control and uses a rechargeable battery.

WSJ: Testing, Testing...Can You Hear Better Now?

Streetlights have been turned back on at five of the 46 Buckinghamshire locations that were part of a three-year switch-off trial.

BBC: Lights turned back on at five Buckinghamshire sites

They seem only to care about where the on-off switch is located.

FORBES: Does It Matter If Millennials Don't Know How Cars Work?