By introducing the pollution of Le an River and its reasons,it points out that Le an River is polluted by Dexing Copper Mine and some other factoris and mines along the Zhishui River.是什么意思_By introducing the pollution of Le an River and its reasons,it points out that Le an River is polluted by Dexing Copper Mine and some other factoris and mines along the Zhishui River.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句