exhaust ventilator

例句：

1. 1. The exhaust ventilator helps to remove the harmful gases from the room.
   排气通风器帮助从房间中去除有害气体。
2. 2. The exhaust ventilator is essential for maintaining a healthy indoor environment.
   排气通风器对于保持室内空气健康至关重要。
3. 3. The exhaust ventilator is designed to improve air quality in the room.
   排气通风器旨在改善房间的空气质量。