名词
中文翻译：备用压缩机
同义词：
['standbypump', 'standby engine']
例句：
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1. The engineers are standing byto start the new machine immediately.
工程师们随时准备启动新机器。
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2. Thefire department has a stand-by compressor onstandby in case of emergencies.
消防部门有一个备用压缩机，以防紧急情况发生。
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3. The construction site is equippedwith several stand-by compressorsto ensure continuous operation during maintenance.
施工现场配备了几台备用压缩机，以确保在维护期间能够持续运行。