precast stairway

例句：

1. 1.The architect designed the precast stairway for the new building.
   建筑师为新建筑设计了预制楼梯。
2. 2. The construction crew installed the precast stairway in the basement.
   施工队在地下室安装了预制楼梯。
3. 3.The precast stairway was a popular choice for modern homes.
   预制楼梯是现代家庭中受欢迎的选择。