Kate, don't forget to turn off the light when you leave the room.

凯特，你离开房间时别忘了关灯。

youdao

He puts out his hand to turn off the light.

他伸手去关灯。

《新英汉大辞典》

You forgot to turn off the light.

(你忘了关灯了。)你忘了关灯了。

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

Will the last one out please remember to turn off the black light?

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The phytochrome can then be exposed to a different shade of red light to turn the gene off.

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Users would be able to program lights to automatically turn on and off when people are in the room, to adjust light levels to the amount of daylight coming into a room and to turn on and off or dim at different times via the Internet.

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