名词
中文翻译：倒流
同义词：
['downflow', 'outflow']
例句：
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1.The river's flow is slowing down due to the construction.
由于建设，河流的流速正在减慢。
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2. The sink flow was causing a problem with the water pressure.
下泄水流造成了水压问题。
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3.The outflow of the lake is essential for the ecosystem.
湖泊的外泄对于生态系统至关重要。