名词
中文翻译：循环空气流动
同义词：
['circulating air', 'recirculated air', 'recirculated airflow']
例句：
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1.The new ventilation system greatly improves the indoor air quality.
新的通风系统极大地改善了室内空气质量。
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2. The recirculating air flow in the room is very efficient.
房间里的循环空气流动非常高效。
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3.The recirculating air flow helps to reduce energy consumption.
循环空气流动有助于降低能源消耗。