动词
中文翻译：关闭
同义词：
['switch off', 'turn down', 'cut off', 'disconnect']
例句：
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1.The light switch is on the wall next to the door.
开关在门旁边的墙上。
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2.Please turn off the lights when you leave the room.
当你离开房间时，请关掉灯。
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3.The power went out during the storm, so we had to turn off the lights and stay in the dark.
暴风雨期间电力中断了，所以我们不得不关掉灯，待在黑暗中。