stair soffit

例句：

1. 1. The staircase leads to the second floor.
   楼梯通向二楼。
2. 2. She climbed the stairs to reach the top of the building.
   她爬上楼梯到达大楼顶部。
3. 3. The old lady used to climb the stairs every morning.
   那位老太太以前每天早上都爬楼梯。