名词
中文翻译：放电开关
同义词：
['switch', 'switch off', 'power switch']
例句：
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1. The engineer found the faulty switch and fixed it immediately.
工程师发现故障开关并立即修理了它。
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2. The car's battery needs to be switched on before starting the engine.
在启动发动机之前，汽车的电池需要接通电源。
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3. The old man used to use a switch to turn on the lights in his house.
这位老人过去经常用一个开关来打开他家里的灯。