build fortifications
修建防御工事
strong fortifications
坚固的防御工事
existing fortifications
现有的防御工事
improve fortifications
改善防御工事
defending fortifications
防御防御工事
ancient fortifications
古代防御工事
damaged fortifications
受损的防御工事
reinforced fortifications
加固的防御工事
future fortifications
未来的防御工事
erect fortifications
设置防御工事
the castle's fortifications were impressive, with thick walls and numerous towers.
城堡的防御工事令人印象深刻，有厚厚的城墙和众多的塔楼。
engineers began planning new fortifications to protect the city from invaders.
工程师们开始规划新的防御工事，以保护城市免受入侵者侵害。
the ancient fortifications provided a strong defense against enemy attacks.
古老的防御工事为抵御敌人的袭击提供了强大的保护。
maintaining the fortifications required a significant investment of resources.
维护防御工事需要大量的资源投入。
the army strengthened the existing fortifications before the expected siege.
在预期的围攻之前，军队加强了现有的防御工事。
the design of the fortifications included moats, walls, and guard towers.
防御工事的设计包括护城河、城墙和瞭望塔。
despite the fortifications, the city eventually fell to the enemy.
尽管有防御工事，这座城市最终还是被敌人攻陷了。
the strategic placement of the fortifications was key to their effectiveness.
防御工事的战略位置是其有效性的关键。
the crumbling fortifications needed urgent repair and reinforcement.
摇摇欲坠的防御工事需要紧急修复和加固。
the fortifications offered a vital line of defense against the approaching army.
防御工事为抵御逼近的军队提供了一条重要的防线。
they studied historical fortifications to understand defensive strategies.
他们研究历史上的防御工事，以了解防御策略。
the island's natural fortifications made it a strategic location for a military base.
岛屿的天然防御工事使其成为军事基地的理想位置。
build fortifications
修建防御工事
strong fortifications
坚固的防御工事
existing fortifications
现有的防御工事
improve fortifications
改善防御工事
defending fortifications
防御防御工事
ancient fortifications
古代防御工事
damaged fortifications
受损的防御工事
reinforced fortifications
加固的防御工事
future fortifications
未来的防御工事
erect fortifications
设置防御工事
the castle's fortifications were impressive, with thick walls and numerous towers.
城堡的防御工事令人印象深刻，有厚厚的城墙和众多的塔楼。
engineers began planning new fortifications to protect the city from invaders.
工程师们开始规划新的防御工事，以保护城市免受入侵者侵害。
the ancient fortifications provided a strong defense against enemy attacks.
古老的防御工事为抵御敌人的袭击提供了强大的保护。
maintaining the fortifications required a significant investment of resources.
维护防御工事需要大量的资源投入。
the army strengthened the existing fortifications before the expected siege.
在预期的围攻之前，军队加强了现有的防御工事。
the design of the fortifications included moats, walls, and guard towers.
防御工事的设计包括护城河、城墙和瞭望塔。
despite the fortifications, the city eventually fell to the enemy.
尽管有防御工事，这座城市最终还是被敌人攻陷了。
the strategic placement of the fortifications was key to their effectiveness.
防御工事的战略位置是其有效性的关键。
the crumbling fortifications needed urgent repair and reinforcement.
摇摇欲坠的防御工事需要紧急修复和加固。
the fortifications offered a vital line of defense against the approaching army.
防御工事为抵御逼近的军队提供了一条重要的防线。
they studied historical fortifications to understand defensive strategies.
他们研究历史上的防御工事，以了解防御策略。
the island's natural fortifications made it a strategic location for a military base.
岛屿的天然防御工事使其成为军事基地的理想位置。
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