防弹掩体

例句：

1. 1. The soldiers huddled behind the anti-aircraft gun to protect themselves from enemy fire.
   士兵们躲在防空炮后面保护自己免受敌军火力攻击。
2. 2. The policeman used his shield as a makeshift barricade to block the incoming bullets.
   警察用他的盾牌作为临时障碍物挡住了飞来的子弹。
3. 3. The wounded soldier was taken to a bulletproof shelter for medical attention.
   受伤的士兵被送往一个防弹掩体接受医疗照顾。