fortification
n
1 [U] fortifying; strengthening 加强防卫; 强化
plans for the fortification of the city 加强城市防御的计画.
2 [C usu pl 通常作复数]
tower, wall, ditch, etc built to defend a place against attack 碉堡、 围墙、 战壕等防御进攻的建筑物
These fortifications were all built during the last war. 这些防御工事都是上次战争时修筑的.
🗣️ 情景例句
Don't cross that bridge till you come to it.
没到河边,先别操心怎么过桥。
You cannot flay the same ox twice.
一头牛不能剥两次皮。
Spiders are not insects, as many people think, nor even nearly related to them.