名词
中文翻译：循环流动
同义词：
['circulating flow', 'recurrent flow']
例句：
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1.The river has a circular flow that is essential for the ecosystem.
这条河流有一个循环流动，对生态系统至关重要。
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2. The circular flow of information in this system is crucial for its operation.
这个系统中信息循环流动对于其运作至关重要。
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3.The circular flow of the blood helps to remove waste products from the body.
血液循环的循环流动有助于从身体中清除废物。