名词
中文翻译：保持件
同义词：
['supporting part', 'retaining member']
例句：
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1. The engineer used a special tool toremove the retaining piece from the machine.
工程师使用特殊的工具从机器中取出了保持件。
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2. The car's engineis made up of several retaining piecesthat work together to power it.
汽车的发动机由几个保持件组成，它们一起工作来驱动汽车。
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3. Thescientist found that the retaining piece was holding the structuretogether securely.
科学家发现保持件牢固地将结构连接在一起。