A large enemy force is bearing down upon the border.

大军压境。

A massive enemy force was bearing down on the border.

大兵压境。

A general of the enemy force was captured alive in the battle.

这次战役生擒了敌人的一员大将。

We turned back a much larger enemy force.

我们把力量强得多的敌人顶了回去。

This time we have taken measure of the enemy force.

这一次我们摸了一下敌人的底。

The enemy force defending the city of Kirin fled towards Changchun.

吉林守敌弃城逃往长春.

An enemy force that is dispersed in an urban area or other close terrain, and perhaps intermixed with the noncombatant population, is highly difficult to find and attack.

一支疏散到城市或者其它封闭地形下，以及可能与非战斗人群混杂在一起的敌军，是非常难以发现和进攻的。