firnn.粒雪;积雪
firn.枞树;冷杉;枞木
firing action击发动作
fir tree root杉形根
fir partition耐火隔墙
firing player射击选手
firing spring撞针簧
fir-hydrant灭火龙头
firing-linen.火线n.安装石油运输管线的工地;修理管线区域
firing ground射击场,靶场
firing stance射击姿势
firing at sea对海校射