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名词
n. 开关；电闸
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small handle,knob,or button that turns electricity on and off
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The light switch is on the wall near the door.
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电灯的开关在靠近门口的墙上。
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名词
n. 改变；变更
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a change
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We made a switch in our plan to go swimming when it started to rain.
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天开始下雨了，我们改变了去游泳的计划。
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动词
v. 接通或切断（电流）
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press a handle,knob or button to turn electricity on or off
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Our radio switches off by itself.
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我们的收音机能自动关上。
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动词
v. 转换；改变
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change to something different
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He switched from a back seat to a front seat so that he could see more.
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他从后排位子移到前排去，以便看得清楚些。
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