High stone walls topped with snaky concertina wire, set off at intervals by looming guard towers.顶部装着蛇腹式铁丝网的高高的石墙, 被渐渐隐现的哨塔隔开.Deep ditch, single drawbridge, massive stone walls, eight at towers, cannon, muskets, fire and...
The towers are made of steel cased in granite.这些塔楼是钢结构，花岗岩贴面。academics living in ivory towers生活在象牙塔中的学者the silhouette of chimneys and towers烟囱和塔楼的轮廓...