名词
中文翻译：逆流
同义词：
['backflow', 'counterflow', 'flowback']
例句：
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1.The river reverses its current as it reaches the mountain.
河流在到达山时会逆转其流向。
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2.The water in the reservoir is flowing back into the main stream.
水库中的水正在回流到主河中。
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3.The engineer designed a device to reverse the flow of the river.
工程师设计了一种设备来逆转河流的流向。