The castle's defences were impenetrable.

这座城堡的防御措施坚不可摧。

The army set up temporary defences around the camp.

军队在营地周围设置了临时防御措施。

They improved their defences after the last attack.

在上次袭击后，他们改进了防御措施。

The city built strong defences to protect against invaders.

这座城市建造了坚固的防御措施来抵御入侵者。

The country's defences include both military and cyber strategies.

这个国家的防御措施包括军事和网络策略。

Achilles heel is his harbor defences.

敌人的弱点在其海港防御。

When the war ended all defences stopped , too.

战争结束时防御工事也停止了。

I will take this time to build more defences.

我会用这个时间建造更多的防御。

The iron dragon marches to your punny defences.

钢铁之龙正在向你微不足道的防御进军.

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.