air pollutant

例句：

1. 1. The factory is responsible for the high levels of air pollution in this area.
   这家工厂对该地区高浓度的空气污染负有责任。
2. 2. The government has introduced stricter regulations to reduce air pollution.
   政府已引入更严格的规定以减少空气污染。
3. 3. Air pollution is a major health concern for many people around the world.
   空气污染是全世界许多人的主要健康关注点。