短語詞組短語coal -mining industry cities 煤炭工業(yè)城市coal and mining industry 煤炭開採業(yè);煤囌coal mining industry basic 煤鑛基層Coal Mining Industry Company &def 煤鑛工業(yè)公司Chinese coal mining industry 煤鑛行業(yè) 返回 coal mining industry