Storm water samples collected from an urban road in Xi′an City show that the urban road surface runoff has much greater pollution intensity of SS and COD and possess less biodegradability.

对西安市南二环路雨天路面径流排水进行了连续取样监测，表明城市道路路面径流污染物SS和COD具有很高的污染强度，且生物可降解性较差。

youdao

The urban storm water runoff has itself characteristics and regulation.

城市雨洪水有其自身的一些特点和其内在的规律性。

youdao

The students designed a progressive urban environment that can handle large amounts of storm-water runoff by using green technologies and major roadways as storm-water filtration and transport surfaces.

WHITEHOUSE: The White House