Few switch DNT on now, but if tracking is off it will stay off.

现在很少有人打开“禁追踪”选项，但如果追踪选项处于关闭状态，它就会一直处于关闭状态。

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

They switch on slowly, and they are reluctant to switch off.

它们启动缓慢，并且很难关闭。

youdao

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 cognitive structures are still there, but the on-off switch is switched to off.

认知结构仍然存在，只是开关还没有被开启。

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?

With a mechanical keyboard, on the other hand, each key press triggers an actual on-off switch a feeling as solid as flicking on the lights.

WSJ: Keys That Really Click

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

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