名词
中文翻译：通风
同义词：
['air vent', 'air circulation', 'ventilation system']
例句：
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1. The room needs good ventilation to keep the air fresh.
房间需要良好的通风，以保持空气新鲜。
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2.The hospital has a well-designed ventilation system to ensure patient safety.
医院拥有一个设计精良的通风系统，以确保患者安全。
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3. The engineers worked hard to improve the ventilation efficiency of the building.
工程师们努力提高建筑物的通风效率。