楼梯式的

例句：

1. 1.The stairway to the top floor is steep and narrow.
   通往顶楼的楼梯陡峭且狭窄。
2. 2.She climbed the stairs slowly, taking care not to slip.
   她慢慢地爬上楼梯，小心不要滑倒。
3. 3. The old lady used to climb the stairs every morning for exercise.
   那位老太太以前每天早上都爬楼梯锻炼。