Baumann exhaust

例句：

1. 1. The car's engineis producing a lot of exhaust fumes.
   这辆车的发动机排放了很多废气。
2. 2. Theexhaust system in the car needs to becleaned regularly.
   汽车的排气系统需要定期清理。
3. 3. The exhaust gases are being releasedinto the atmosphere.
   废气正在被释放到大气中。