河水污染

例句：

1. 1. The factory is causing serious water pollution in the nearby river.
   这家工厂正在附近河流中造成严重的水污染。
2. 2.The government has taken steps to reduce air pollution.
   政府已经采取措施减少空气污染。
3. 3. The pollution of the environment is a global issue that needs urgent attention.
   环境污染是一个全球性的问题，需要紧急关注。