n.炮手；枪手
He is a gunner of the British navy. 他是英国海军的一名炮手。
Gunner Jones was praised by the general. 炮手琼斯受到了将军的表扬。
The gunner aimed carefully. 枪手仔细瞄准。
The machine gunner fired off two magazines without a break. 机枪手一口气打光了两梭子子弹。
n.火炮制造与射击学；枪枝的使用；射击技术
