But in humans, that blastema never grows.

但在人类中，胚基永远不会生长。

As the blastema grows, it begins to form the outline of the new limb and the foot.

随着胚基的生长，它开始形成新肢体和足部的轮廓。

These cells revert back to a less specialized state and begin creating the blastema, which is the bud of a new limb.

这些细胞恢复到不太特化的状态并开始产生胚基，这是新肢体的芽。