pollutant

名词 pollutant:

1. waste matter that contaminates the water or air or soil

1. Discharge pipe take pollutant away from the coastal area into the sea.
   排泄管道将污染性物质由沿海岸区排入大海。

pol.lut.ant

n.（名词）
Something that pollutes, especially a waste material that contaminates air, soil, or water.
污染性物质：造成污染的物质，尤其指一种污染空气、土壤或水的废物