通往楼顶的楼梯: a staircase that mounts to the toof a building
在楼顶我们能俯视这座城市: we were able to survey the city from the toof the high building
Example Sentences:
1.
Photo caption : two students of the hku expedition team performed abseiling from the top of knowles building in the pledge ceremony today 图片说明:港大攀山队其中两位成员于誓师大会中由钮鲁诗楼顶层游绳而下。