personnel fortifications人防工事
storming fortifications攻坚战
Bangkok Fortifications曼谷防御工事
neglected fortifications年久失修的防御工事;年久失修的防御工程
field fortifications野战防御工事
storm fortifications攻坚;攻打强敌或敌人的坚固防御工事
Les Fortifications莱斯防御堡垒酒店
Permanent Fortifications永备工事
defense fortifications防御工事
N-COUNT（可数名词） Fortifications are buildings, walls, or ditches that are built to protect a place and make it more difficult to attack. 防御工事 [usu pl]→ see also fortify
The government has started building fortifications along its eastern border.
政府已经开展了沿东部边境建造防御工事的工程。