相关单词近義詞 coalpit 煤坑臨近詞coalbed, coal, coal mine flooding, coalmine' s tunnel, coal oriented city, coalescing element, coal ash viscosity, coal mass strength, Coal series kaolin, coal seam fracture, coal replacing oil, coal stratingraphy相似詞coagulation, coal, coal black, coal bunker, coal miner, coal scuttle, coal tar, coal-fired, 返回 coal mine