名词中文翻译
中文翻译：备用皮带
同义词：
['backup belt', 'spare belt', 'backup gear']
例句：
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1.The mechanics replaced the broken back-up belt with a new one.
机械师用一条新的备用皮带替换了旧的。
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2. During emergencies, the team always has a backup belt ready to use.
在紧急情况下，团队总是有备用皮带准备使用。
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3. The engineer checked the back-up belt before starting the engine.
工程师在启动发动机之前检查了备用皮带。