underground mine
短语词组
- Deep underground metal mine 深井金属矿山
- underground ore mine 地下铁矿
- underground uranium mine 地采铀矿山
- underground metal mine subordinate 地下金属矿山
- underground coal mine staff 煤矿井下人员
- underground coal mine 煤矿井下;地下煤矿
- underground metal mine 地下金属矿山
- Anjialing underground coal mine 安家岭井工矿
- underground metallic mine 地下金属矿山 返回 underground mine