Noun:

1. a seam of coal

coalboxn.煤箱；发黑烟的炸弹coaln.煤；木炭vt.烧成炭；供应煤vi.加煤；装煤coalbed injection煤层注水Coal mine methane煤层气coal gangue stone煤矸石Coal mine in town乡镇煤矿coal accumulation聚煤作用coal gangue brick矸石砖coalcutter loader联合采煤机coal dropping bed落煤床coal slurry water煤泥水coal fried boiler燃煤锅炉

1. Coal miners; coal seams; coal haulers.
   煤矿工; 煤层; 运煤工