And this is an astragalus or an ankle bone, which has a both an upper and lower curved surface which allows the spring in the step.

这就是一块距骨或者说踝骨，其表面同时有向上和向下的弯，在走路时有弹性。

He felt her foot all over, moving the ankle and the instep and every toe.

他摸遍了她的脚，动了动踝骨、足弓和每一根脚趾。

They even had a game similar to jacks that was  played with the ankle bones of sheep or goats.

他们甚至有一种类似千斤顶的游戏，是用羊或山羊的踝骨玩的。

Their texture is spongy except at the surface, where there is a thin layer of compact bone. Examples of short bones are the wrist and ankle bones.

它们的结构除表面为一层菲薄的密质骨外，其余部分如海松多孔。短骨的实例包括腕骨和踝骨。

It even had a special ankle bone, called an astragalus, shaped kind of like a pulley.

它甚至拥有一种特殊的踝骨，称为距骨，形状有点像滑轮。

Both animals had hard, sturdy limb and ankle bones, indicating that they mainly lived on dry land, like modern red-backed salamanders do.

这两种动物都有坚硬稳固的四肢和踝骨，表明它们主要生活在陆地上，就像现代红背蝾螈一样。

But members of Archonta do share a lot of the same skeletal features, from the presence of a tiny bone in the inner ear to the particular way their ankle bones fit together.

但灵长类超目的成员确实共享许多相同的骨骼特征，从小耳内的微小骨头到它们踝骨的独特连接方式。