trench mortar

1. 正進站的火車；剛來的郵件；正襲來的迫擊炮
   Incoming trains; incoming mail; incoming mortar fire.
2. 密集的迫擊炮火力從這些陣地射向由山谷那邊上來的援軍。
   From these positions mortar fire was rained down upon reinforcements moving up through the valley.
3. 受重型迫擊炮火力威脅的敵軍陣地；受步槍火力的襲擊
   Subjected enemy positions to heavy mortar fire; struck by rifle fire.
4. 軍隊被迫擊炮攻擊。
   The army was fired by mortars.

擊的英語翻譯：

炮的英語翻譯：