coal mine colliery
煤矿、煤矿
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The colliery, as one kind of the mine, is a kind of special geographical area, which is in large scale, wide area, big difference between geological condition and coal seam composition.
煤矿作为矿山的一种，是一种特殊的地理区域，规模庞大，面积较广，地质条件和煤层赋存条件差别很大。
youdao
应用推荐
模块上移
模块下移
不移动