The discharges from separate storm sewer systems in the dry weather do great harm to receiving water in Shanghai.
分流制雨水系统旱流放江严重污染了上海市河道水质。
The sewer system is ancient and poorly designed, combining storm water runoff with sewage in the same piping system.
下水道系统是古代和设计不当，结合雨水径流污水在同一管道系统。
The sewer system is ancient and poorly designed, combining storm water runoff with sewage in the same piping system.
下水道系统是古代和设计不当，结合雨水径流污水在同一管道系统。
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