名词短语
中文翻译：备用设备钥匙
同义词：
['备用钥匙，备用工具例句：1. The security guard kept a stand-by equipment key on his person at all times.（保安总是随身携带备用设备钥匙。）']
例句：
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1. The security guard kept a stand-by equipment key on his person at all times.
保安总是随身携带备用设备钥匙。
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2.He used the stand-by equipment key to unlock the door before he could reach it with his key.
他用备用设备钥匙在他能使用钥匙之前打开了门。
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3.The technician had to use the stand-by equipment key to start the generator, which was not working properly.
技术人员不得不用备用设备钥匙来启动发电机，因为其工作不正常。