separate sewer system

• 分流下水道系统,分流排污系统

separate sewer system的用法和样例：

例句

1. Gurgaon's roadsides are disfigured by deep trenches, where the trunk sewer line waits to be laid.
   古尔冈的路边被深深的地沟弄的不成样，这的排污系统也逐渐的消失了。