a fifteen-storey building的用法和样例：
- Our ten - storey building is out of straight.
- Look at that sixteen - storey building!
- We will now have a fifteen minute recess after this lesson.
- It was contained to some equipment on the roof of the45- storey building.
- Hotel is a12- storey building, ranging from standard room, deluxe room and deluxe suite.
- Which do you think is better as a gift for a fifteen year old girl?