名词
中文翻译：闭路通风
同义词：
['closed circuit air conditioning', 'closed loop air distribution', "closed-loop ventilation例句：1. The hospital uses closed-circuit ventilation to keep the patient's room fresh and clean.（医院使用闭路通风来保持病房的新鲜和清洁。）"]
例句：
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1. The hospital uses closed-circuit ventilation to keep the patient's room fresh and clean.
医院使用闭路通风来保持病房的新鲜和清洁。
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2. In this closed-circuit ventilation system, the air is constantly recycled and filtered.
在这个闭路通风系统中，空气被不断地循环和过滤。
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3.The closed-circuit ventilation system helps to reduce the spread of airborne diseases.
闭路通风系统有助于减少空气传播的疾病传播。