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1.The circuit breaker is the fuse that protects the electrical system from overheating.
断路器是保护电气系统免受过热的保险丝。
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2.The car's engine needs to be checked regularly to ensure it functions properly.
汽车发动机需要定期检查以确保其正常运行。
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3.The power cord is a type of wire used to connect electronic devices together.
电源线是一种用于连接电子设备的电线。