短语词组短語strip coal mining 露天採煤strip -mining 露天鑛strip p mining 露天開採;條狀開採法deep strip pillar mining 深部條帶開採strip mining of coal 露採煤鑛strip mining under village 村莊下條帶開採ascending strip mining 條帶上行開採strip mining machine 露採機 返回 strip mining