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

它甚至还有一块特殊的，叫做黄芪，形状有点像滑轮。

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于千斤顶的游戏，是用绵羊或山羊的的。

Some very early cetaceans have this ankle bone, too, which tells us that cetaceans evolved from artiodactyls.

一些非常早期的鲸类动物也有种，告诉我们鲸类动物是从偶蹄类进化而来的。

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

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

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.

就是一块距或者说，其表面同时有向上和向下的弯曲，使之在走路时有弹性。

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外，其余部分如海绵般疏松多孔。短的实例包括腕和。

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.

但是 Archonta 的成员确实有很多相同的骼特征，从内耳中存在的一根小头到他们的结合在一起的特殊方式。