Contamin

例句：

1. 1. The factoryhas been contaminating the watersupply with its waste.
   这家工厂一直在用它的废物污染供水。
2. 2. The chemical spill hascontaminated the nearby river.
   化学泄漏已经污染了附近的河流。
3. 3. Thecontamination of theenvironment is a serious concern forour future.
   环境污染是我们未来面临的一个严重问题。