名词
中文翻译：移动的板子
同义词：
['movable plates', 'moving parts']
例句：
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1. The engineer was fixing the moving plates on the car.
工程师正在修理汽车上的活动板。
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2. The moving plates were causing a lot of noise in the workshop.
活动板在车间里造成了很多噪音。
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3. The moving plates need to be replaced regularly to ensure smooth operation.
活动板需要定期更换，以保证操作顺畅。