taint of odour risks

例句：

1. 1. The factoryhas a serious pollution problem.
   这家工厂有严重的污染问题。
2. 2. The sewage from thecity is a major source of pollution.
   城市污水是主要的污染源。
3. 3. Thecontaminated water wasreleased into the river.
   被污染的水被排放到河里。