endogenous pollution的用法和樣例：
例句
- Soil erosion and non-point source pollution are two serious environmental issues.
土壤侵蝕與非點源污染是兩大重要的環境問題。 - The results showed that in-lake conduit pollutions were main exogenous pollutions of Xuanwu Lake and were the inducing factors that aggravated endogenous pollutions of take.
結果表明，入湖溝渠污染是玄武湖的主要外源污染，也是加重胡泊內源污染的誘發因素。
