枪口

例句：

1. 1. The hunter aimed his gun at the target.
   猎人把枪对准了靶子。
2. 2. The soldier fired a warning shot at the enemy.
   士兵向敌人开了一枪作为警告。
3. 3. The policeman was trained to shoot from the muzzle of his gun.
   警察受过训练，能够从枪口射击。