名词
中文翻译：Unknown
同义词：
['backflow', 'counterflow', 'inverse flow例句：1. The river has reversed its flow to the sea.（这条河的流向已经改变，现在它流入了大海。）']
例句：
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1. The river has reversed its flow to the sea.
这条河的流向已经改变，现在它流入了大海。
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2.The pump is designed to reverse the flow of water.
这个泵的设计是反转水流。
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3.The backflow preventer is essential for maintaining a clean environment.
反流防止器对于保持清洁的环境至关重要。