短語(yǔ)詞組短語(yǔ)coal -mining industry cities 煤炭工業(yè)城市coal and mining industry 煤炭開采業(yè);煤蘇coal mining industry basic 煤礦基層Coal Mining Industry Company &def 煤礦工業(yè)公司Chinese coal mining industry 煤礦行業(yè) 返回 coal mining industry