spinefoot

例句：

1. 1. The dog had a spinefoot on its left front paw.
   这只狗左前脚上有一只刺足。
2. 2.The spider was crawling along the spinefoot of a tree.
   蜘蛛正沿着一棵树的刺足爬行。
3. 3.The man had a spinefoot on his right foot, which made walking difficult.
   这个人右脚上有一个刺足，走路很困难。