monkey shaft

例句：

1. 1.The monkey was swinging on the monkey shaft.
   猴子在猴柄上荡秋千。
2. 2.He used a monkey shaft to climb up the tree.
   他用一个猴柄爬上了树。
3. 3.The monkey shaft was a popular tool for climbing trees.
   猴柄是爬树时常用的工具。