Can you switch the light off?

你可以把灯关掉吗？

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In addition, movement sensors judge whether a space is occupied or not; if there is no movement, the BMS will switch the light off.

另外，活动传感器可以判断一个空间是否正在被使用着，如果没有被使用中，BMS控制系统将会将其关闭。

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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》

"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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Lighthouse authority Trinity House plans to switch off Godrevy light on the edge of St Ives Bay by 2010.

BBC: NEWS | UK | England | Cornwall | Lighthouse switch-off considered

The incident took place in March, months before the county's street light switch off.

BBC: Northampton