The preliminary Discussion on the evolving tendency of the regional eco-environment of Hei Dai Gou open-cut coal mine in Zhun Geer Banner of Inner nongolia是什麼意思_The preliminary Discussion on the evolving tendency of the regional eco-environment of Hei Dai Gou open-cut coal mine in Zhun Geer Banner of Inner nongolia在線翻譯_英語_讀音_用法_例句