free settling particle

例句：

1. 1. The river is known for its ability to carry free settling particles downstream.
   这条河以其能够携带自由沉降颗粒物的能力而闻名。
2. 2.The study found that the free settling particles in the water could be a significant source of pollution.
   研究发现，水中的自由沉降颗粒物可能是污染的一个重大来源。
3. 3. In this area, the soil is rich in free settling particles, which can be beneficial forplant growth.
   在这个地区，土壤富含自由沉降颗粒物，这对植物生长是有益的。