laddershaped distribution method

例句：

1. 1.The ladder was made of wood and had a ladder-shaped design.
   这根梯子是用木头做的，设计成梯状。
2. 2.The ladder was designed to be easy to climb, with a ladder-shaped rung for each step.
   这根梯子设计得很容易爬，每个步骤都有梯状的横档。
3. 3. The ladder was used to help people reach higher places in the building.
   这根梯子用来帮助人们爬到建筑物的高处。