名词
中文翻译：返回泵
同义词：
['reflux pump', 'return pump']
例句：
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1.The return pump is responsible for recirculating the water back to the tank.
返回泵负责将水循环回水箱。
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2.The engineer designed a return pump that can handle large volumes of water.
工程师设计了一个可以处理大量水的返回泵。
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3.The return pump was used to prevent the contamination of the drinking water.
返回泵被用来防止饮用水的污染。