名词
中文翻译：呼吸口
同义词：
['vent', 'air intake', 'exhaust duct例句：1. The engineer designed a breathing vent to improve the efficiency of the machine.（工程师设计了一个呼吸口来提高机器的效率。）']
例句：
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1. The engineer designed a breathing vent to improve the efficiency of the machine.
工程师设计了一个呼吸口来提高机器的效率。
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2.The exhaust duct is used to direct the smoke and fumes from the engine out of the building.
排气管用来将发动机产生的烟雾和废气排出建筑物。
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3.The ventilation system is crucial for maintaining a healthy indoor environment.
通风系统对于保持室内空气健康至关重要。