pigment pollution

例句：

1. 1. The factory's wastewater is a major source of pigment pollutionin the area.
   这家工厂的废水是该地区颜料污染的主要来源。
2. 2. The governmenthas taken measures to reducecolor pollution in the city.
   政府已经采取措施减少城市中的颜料污染。
3. 3. Thechemical industry is one of the main sourcesof dye pollution in the world.
   化学工业是世界上染料污染的主要来源之一。