ladder rack

例句：

1. 1. The ladder rack was placed in the corner of the room to help me reach the bookshelf.
   梯子架被放在房间的角落，帮助我够到书架。
2. 2. The ladder rack is designed to support heavy loads and prevent accidents.
   梯子架设计用来支撑重物，防止事故。
3. 3. The ladder rack was a lifesaver when we needed to reach the ceiling.
   当我们需要到达天花板时，梯子架救了我们一命。