mortal shells

• 迫击炮弹

mortal shells的用法和样例：

例句

1. Twelve enemy transport aircraft on the handstand were knocked out by mortar shells.
   停机坪上的十二架敌方运输机被迫击炮弹击毁了。
2. A few motar shells were landing somewhere with a flat thudding sound.
   不知哪里落了几颗迫击炮弹，闷声闷气地轰轰几响。