名词
中文翻译：通风管
同义词：
['ventilator', 'ventilation duct例句：1. The air quality in the city has significantly improved since the implementation of stricter environmental regulations.（自从实施更严格的环境法规以来，该市的空气质量已显著改善。）']
例句：
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1. The air quality in the city has significantly improved since the implementation of stricter environmental regulations.
自从实施更严格的环境法规以来，该市的空气质量已显著改善。
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2. The ventilation ducts are essential for maintaining a healthy indoor environment.
通风管对于保持室内空气健康至关重要。
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3.The engineer designed the ventilation ducts to ensure proper airflow throughout the building.
工程师设计了通风管以确保整个建筑内的空气流通。