mortar firing

• 深水炸弹发射器发射

mortar firing的用法和样例：

例句

1. Incoming trains; incoming mail; incoming mortar fire.
   正进站的火车; 刚来的邮件; 正袭来的迫击炮
2. From these positions mortar fire was rained down upon reinforcements moving up through the valley.
   密集的迫击炮火力从这些阵地射向由山谷那边上来的援军。