弹壳

例句：

1. 1.The bullet was lodged in the bulletproof jacket's padding.
   子弹卡在防弹衣的衬垫里。
2. 2.The policeman used his shield to protecthimself from the falling debris.
   警察用他的盾牌保护自己免受落下的碎片的伤害。
3. 3. Thesoldier had to remove the shell from hisrifle before he could fire again.
   士兵在再次射击前必须从步枪中取出弹壳。