pollutant

名词

1. 1

   污染物、污染物质

   The factory released harmful pollutants into the nearby river for years.

   那间工厂多年来把有害污染物排入附近的河流。

2. 2

   污染源

   Cars remain the biggest pollutant in most large cities.

   在多数大城市，汽车仍是最大的污染源。