A fortified structure, such as a trench or fortress.
防御工事防御结构，如壕沟或堡垒
A minor fortification constructed beyond a main defensive position or fortification.
简易外围工事在主要防御位置或防御工事之外构筑的小防御工事
The right or left side of a bastion.
防御工事的左侧或右侧.
a fortification that is invulnerable to attack
固若金汤的防御工事.
He directed barricades to be built.
他下令建筑防御工事。
secured with bastions or fortifications.
有堡垒或防御工事保卫。
Emplace a fortification on the hilltop.
在山顶修筑了防御工事
[C]temporary fortification made by troops
临时筑成的防御工事.
A fence of pales forming a defense barrier or fortification.
栅栏形成防御障碍或防御工事的栅栏围墙
To strengthen and secure(a position)with fortifications.
设防御工事，设防以防御公事加强或防护（战略位置）
Something that serves to fortify, especially military works erected to fortify a position or place.
防御工事用于筑城的东西，尤指采取军事行动防御一个位置或地方
A temporary military fortification erected in the field.
野战工事在野外设置的临时军事防御工事
Embattled- Fire or the walls of a fortress or town.
垒墙状线条－，或是指城塞、镇的防御工事。
The defenses of the city must be strengthened.
这个城市的防御工事必须加强。
Our artillery smashed the enemy defenses.
我们的炮兵摧毁了敌人的防御工事。
Here the enemy's defenses were the most formidable.
这里敌人的防御工事是最坚固的。
The enemy brushed aside our defences.
敌人冲破了我们的防御工事.
projecting part of a rampart or other fortification.
指城墙的突出部分或其他防御工事。