炮铜

例句：

1. 1. The soldiers were trained to use the gunpowder muskets.
   士兵们被训练使用火药枪。
2. 2. The artillery was set up on the battlefield to support the infantry attack.
   火炮被安置在战场上以支持步兵的进攻。
3. 3. The cannonballs flew through the air and hit the enemy's position.
   炮弹在空中飞过，击中了敌人的阵地。