ladder winch

例句：

1. 1.The ladder was too short to reach the top of the tree.
   梯子太短，够不到树顶。
2. 2.The hoist was used to lift heavy objects from the ground.
   绞车用来从地面提升重物。
3. 3.The pulley system is essential for lifting heavy loads.
   滑轮系统对于提升重负载至关重要。
4. 4. The winch was used to pull the boat out of the water.
   绞盘被用来把船从水中拉出来。