基本解释n.火线n.安装石油运输管线的工地;修理管线区域同根派生 firing-line相关词英汉例句用作名词 (n.)This is a earth line rather than a live line.这一根是零线而不是火线。He was wounded but refused to leave the line.他受了伤,但不肯离开火线。firing-line更多例句