He fell asleep with the light off.

灯关掉的状态下，他睡熟了。

youdao

Please join us to light off firecrackers.

让我们一起来燃放爆竹除旧岁。

youdao

Turn the light off as you go out.; Please switch off the lights when you leave.

出门时请随手关灯。

《新英汉大辞典》

They used light-sensitive molecules to turn on and off nerve cells in the deep brain structure of mice.

VOA: special.2009.04.07

They were not hot enough -- like stars-- to give off light.

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Soon after a light sell-off began, more pressure was added to the euro when the European Central Bank (ECB) reported that M3 Money Supply remained steady at 0.2% growth.

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These slightly deeper quartz grooves result in light-wave phases that are slightly off-kilter from the light waves that pass through shallower grooves.

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With Eclipse Aviation test pilot Terry Tomeny sitting in the right seat, I flew the newly certified Eclipse 500--the pioneer in a new category of "very light jets"--off Albuquerque International Sunport's runway 8.

FORBES: Magazine Article