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。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 slender superstructure was dictated with gently ...

n.楼梯( staircase的名词复数 )...

staircases的音标：staircases的英式发音音标为：[s'teəkeɪsɪz]staircases的美式发音音标为：[s'terkeɪsɪz]...