Several decades ago,Americans dumped raw sewage into rivers and many industrial plants are now still dumping chemical pollutants into lakes,rivers and oceans.

 
  • 几十年前,美国人把经处理的污物、污水倾倒入江河,许多工厂如今仍在把化学污染物倒入湖泊、江河和海洋。
今日热词
目录 附录 查词历史