名词
中文翻译：开关
同义词：
['switch', 'fuse例句：1. The switch is easy to operate and has a long lifespan.（开关易于操作且使用寿命长。）']
例句：
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1. The switch is easy to operate and has a long lifespan.
开关易于操作且使用寿命长。
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2. The fuse protects the circuit from overheating.
保险丝保护电路免受过热。
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3. The engineer switched on the switch and tested the fuse.
工程师打开开关并测试了保险丝。