ventilating hood

例句：

1. 1. The ventilating hood is designed to improve indoor air quality.
   通风罩的设计旨在改善室内空气质量。
2. 2. The engineers installed the ventilating hood on the roof of the building.
   工程师们在大楼的屋顶安装了通风罩。
3. 3.During the construction, the workers used the ventilating hood to prevent dust from entering the room.
   在施工期间，工人们使用通风罩来防止灰尘进入房间。