gas treatment

例句：

1. 1. The gas treatmentplant is located in the city center.
   这家气体处理厂位于市中心。
2. 2. The gastreatment process involves removing harmfulsubstances from the air.
   气体处理过程涉及从空气中去除有害物质。
3. 3.The gas treatment system was designed to improveindoor air quality.
   该气体处理系统旨在改善室内空气质量。