机枪

例句：

1. 1. The soldiers were firingmachine guns at the enemy from atopthe hill.
   士兵们在山顶上用机关枪向敌人射击。
2. 2. He was killed inthe battle with his rifle.
   他在战斗中被步枪击中身亡。
3. 3. The soldier used his rifleto shoot down the enemy planes.
   士兵用步枪击落了敌机。