dome ladder

例句：

1. 1. The dome ladder was used to reach the top of the building.
   圆顶梯子被用来到达建筑物的顶部。
2. 2.The construction workers were using the dome ladder to install the new roof.
   建筑工人正在使用圆顶梯子安装新的屋顶。
3. 3. The dome ladder was a popular tool for astronauts during space missions.
   圆顶梯子是宇航员在太空任务中常用的工具。