(常作 fortifications)a defensive wall or other reinforcement built to strengthen a place against attack 防御工事;防御城墙 ■[mass noun]the action of fortifying or process of being fortified 筑城,筑垒;设防 the fortification of the frontiers. 边境设防。
语源
late Middle English: via French from late Latin fortificatio(n-), from fortificare (see fortify)