1.
Walls of earth will fortify the building against enemy bombing.
土墙将加固建筑物，以防御敌人的轰炸。
2.
The shield defends him against the enemy's attack
这个盾为他防御敌人的进攻。
3.
People used to build strong walls round their towns as a defense against enemies.
人们从前在城镇四周筑坚固城墙以防御敌人。
4.
The enemy preyed on the defenseless people.
敌人劫掠没有防御能力的人们。
5.
I'm afraid the enemy maintained a kind of Dutch defence.
恐怕敌人的防御是虚张声势的。
6.
fortify a town against invasion
加强防卫一城镇以抵御敌人入侵
7.
a penetration of an enemy's defense in depth and strength.
在深度和强度上对敌人防御的突破。
8.
a defense organized while in contact with the enemy or when time is limited.
与敌人交战或时间受限时的防御。
9.
The principles of the offensive are applied when the enemy is on the defensive.
进攻原则，是在敌人防御时应用的。
10.
Our artillery smashed the enemy defenses.
我们的炮兵摧毁了敌人的防御工事。
11.
Here the enemy's defenses were the most formidable.
这里敌人的防御工事是最坚固的。
12.
The enemy brushed aside our defences.
敌人冲破了我们的防御工事.
13.
Our army burst through the enemy defences.
我军突破了敌人的防御工事。
14.
The defences are kept in readiness for an enemy attack.
防御工事已预备好应付敌人进攻。
15.
The enemy has strengthened their defensive position.
敌人已经加强了他们的防御阵地。
16.
Our army brushed aside the enemy defences and advanced south.
我军扫除了敌人的防御工事向南推进。
17.
The defences are kept in readiness for any enemy attack.
防御工事已筑好，准备对付敌人进攻。
18.
Then the enemy employs the defensive against the Red Army's offensive, and the Red Army employs the offensive against his defensive; this is the second stage of the counter-campaign.
敌人以防御反对红军的进攻，红军以进攻反对敌人的防御，这是反“围剿”战役的第二个阶段。