staircases的例句（staircases在句子中的用法）

• A slender superstructure was dictated with gently sloping approaches rather than staircases. 细长的上部结构,带有微缓斜坡接坡,比布置阶梯为优.
• We have fully functional smoke alarms on all staircases. 我们在各层楼梯都安装有完全可用的烟雾警报器。
• A number of staircases ascend from the cobbled streets onto the ramparts. 一段石阶从鹅卵石路上一直向上直通城墙。