engage in a blood-feud
冤家───enemy;打───hit
Missiles were fired at the enemy.───敌人发射了导弹。
They retreated before the enemy.───敌人，他们撤退了。
The town fell into enemy hands.───那个小镇落到敌人手里了。
If your flank march is going well, the enemy expects you to outflank him.───如果你的侧翼包抄进行的很顺利，是因为敌人正期待着你从侧翼接近他们。
The Karen had been sailing in a convoy to Russia when she was torpedoed by an enemy submarine.───卡伦号当年在为其他船只护航驶往俄国途中突然遭到敌方潜水艇鱼雷的袭击。
Also, the general policy of unity against the enemy would be undermined if this relative freedom were denied or voluntarily abandoned.───如果被人抹杀或自己抛弃这种相对的自由权，那就也会破坏团结对敌的总方针。
We attacked the enemy from the rear.
Our enemy has greatly strengthened during the truce talks.
One enemy is too much.
In today's match England play their old enemy, Scotland.
Nothing worse than a familiar enemy.