The sound of mortar-fire seemed to be closing in.

迫击炮发射的炮兵射击。

The mortar weight is light, the operation is simple.

迫击炮重量轻，操作简便。

A few basic guidelines for mortar teams follow.

下面是一些迫击炮组的基础操作指南。

So that's the difference between "rocket" and "missile". A "mortar" is also just aimed. But a mortar is like a big bullet.

这就是火箭和导弹的区别。“迫击炮”也是瞄准的。但是迫击炮更像是一个大子弹。

I'd let you stay up here with the mortar if I could.

如果可以的话，我会让你和迫击炮呆在一起。