1. The sewer water must be treated before being released into rivers.
下水道污水必须在排入河流前进行处理。

2. Sewer water from the factory was tested for pollution levels.
工厂的污水被检测污染程度。

3. Heavy rain caused sewer water to overflow in some areas.
暴雨导致一些地区下水道污水溢出。

4. Engineers are improving the system that carries sewer water.
工程师正在改进输送污水的系统。

A: Is this sewer water safe?
A：这些污水安全吗？

B: No, it must be treated before any use.
B：不安全，必须经过处理后才能使用。

1) 城市排水系统中的废水
2) 来自家庭或工业的污染水
3) 需要处理的污水统称

1. 污水；下水道水。

e.g. The sewer water is directed to a treatment plant.
污水被引向处理厂。

noun

1. Wastewater carried through sewers, including household and industrial liquid waste that requires treatment before disposal or reuse.

Synonym: sewage, wastewater, effluent