| 例句 |
Coal mining is dying in this area.该地区的采煤业正在消亡。Is there a future for coal?采煤业有发展前景吗？That country already extracts coal from underwater mines; tin is already being ocean-mined by some other countries.那个国家已从水下采煤，另外几个国家业已从海洋开采锡矿。Occupational injuries and even deaths are quite common in the coal mining industry.在采煤业中，工伤甚至是死亡事故都颇为普遍。 |