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。

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Consider a light switch.

想想一个灯的开关吧。

youdao

Instead, for most people, it switches on and off like a light switch.

相反，对于大多数人来说，它就像开关一盏灯一样。

youdao

"By imposing a tax on every American who drives a car or flips on a light switch, this plan will drive up the prices for food, gasoline and electricity,".

VOA: standard.2009.06.27

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

你不需要一个电灯开关,或者一个电管,或者打开关闭一个iPhone应用程序。

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Republicans snarl that Democrats want to tax Americans every time they flip a light switch.

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Every time you turn a light switch on or a faucet off you interact with the market.

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"A couple months into rowing, it was like a light switch going on in my head, " she says.

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