exhaust gas purifier

例句：

1. 1. The exhaust gas purifier helps to reduce the amount of harmful pollutants in the air.
   废气净化器有助于减少空气中有害污染物的量。
2. 2. The exhaust gas purifier is essential for maintaining a clean and healthy environment.
   废气净化器对于保持清洁和健康的环境至关重要。
3. 3. The exhaust gas purifier is used in factories to remove harmful gases from the exhaust.
   废气净化器用于工厂中，从排气中去除有害气体。