fortification

[.fɔ:tifi'keiʃən]

n. 防御工事（尤指堡垒、要塞城墙等）

例句与用法：

These fortifications were built during the last war.

这些防御工事是上次战争时修建的。

This is a plan for the fortification of the city.

这是一个加强城市防御的计划。

详细释义：

n.

1. 设防; 筑城, 筑垒[U]

2. 防御工事[P]