大炮

例句：

1. 1. The army used a large gun to fire at the enemy.
   军队使用一门大炮向敌人开火。
2. 2. The artillery team was responsible for firing the mortars during the battle.
   炮兵队负责在战斗中发射迫击炮。
3. 3. The soldiers were trained in using various types of guns and weapons.
   士兵们接受了各种枪支和武器的使用训练。