total suspended particles

例句：

1. 1. The air quality in this area is significantly worse than the national average.
   该地区的空气质量明显低于全国平均水平。
2. 2.The factory has been operating under strict environmental regulations for years.
   这家工厂多年来一直遵守严格的环保法规运营。
3. 3. The scientists are studying the impact of these total suspended particles on the ecosystem.
   科学家们正在研究这些总悬浮颗粒对生态系统的影响。