stacking bed

例句：

1. 1. The engineer designed a stacking bed for the storage of heavy materials.
   工程师设计了一个用于存储重材料的堆放床。
2. 2.The workers were busy stacking and organizing the boxes in the warehouse.
   工人们忙于在仓库里堆放和整理箱子。
3. 3.The new design of the stacking bed has greatly improved its efficiency.
   新设计的堆放床大大提高了其效率。