楼梯石级

例句：

1. 1. The old building has many stone steps leading up to the entrance.
   这座古老的建筑有许多石头台阶通向入口。
2. 2. He climbed the stairs slowly, taking his time to rest.
   他慢慢地爬上楼梯，慢慢休息。
3. 3. The children were playing on the stone steps outside the museum.
   孩子们在博物馆外的石阶上玩耍。