名词
中文翻译：实际回流
同义词：
['actual backflow', 'actual return flow', 'actual recirculation']
例句：
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1. Thehospital has a system in place to prevent actual reflux from occurring.
医院有一套系统来防止实际回流的发生。
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2.During the construction phase, it's important to avoid actual reflux of wastewater.
在施工阶段，避免废水的实际回流是很重要的。
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3.The engineer found that the design had actually refluxed some of the materials used.
工程师发现设计实际上回流了一些使用的材料。