援軍的用法和樣例：
例句
-
由於敵軍進攻加劇，越來越多的援軍被派遣上前線。
As enemy attacks increased, more and more reinforcements were dispatched to the front. -
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. -
請派援軍來——敵人在大舉進攻了。
Send for reinforcements-the enemy are attacking in strength. -
戰士們拚死堅守陣地，直到援軍到來。
The soldiers held the fort desperately till reinforcement arrived.
