防御工事 的英文翻译

contravallation

fortification

防御工事 的中文句子和英文句子

士兵们加强了他们的防御工事。

The soldiers strengthened their defenses.


防御工事已筑好，准备对付敌人进攻。

The defences are kept in readiness for any enemy attack.


金属筐一种尤其用于筑堤及防御工事的中空的金属筐

A hollow metal cylinder used especially in constructing dams and foundations.