So, very crudely, the thing on the wall is the switch DNA, your finger is the regulator, and gene expression is the light turning on or turning off.

因此，大体上可以这么形容，在墙上的东西就是开关DNA，手指是调控器，基因表达就是打开灯或关闭灯。

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When a child masters turning on and off a light switch, his brain has expended more energy than the most complicated computer that we have on earth.

一个孩子学会开灯关灯的时候，他的大脑消耗的能量超过地球上最复杂的电脑。

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By simply turning on the light in the room you could also switch on your Internet connection.

只要打开房间里的灯，互联网也就连接上了。

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"The overall effect is not going to be turning a light switch off" and banishing the entire US to darkness come the stroke of midnight, says Memo Diriker, director of the European-American Business Institute at Salisbury University.

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