When the fox grows, these cells ... TECUMSEH FITCH: They're doing these epic migrations.

当狐狸长大时，这些细胞...... TECUMSEH FITCH：它们正在进行这些史诗般迁徙。

TECUMSEH FITCH: We're really talking about groups  versus individuals here.

TECUMSEH FITCH：我们这里真正讨论体与个人。

TECUMSEH FITCH: Okay, I'm rolling at my end.

TECUMSEH FITCH： 好，我已经结了。

TECUMSEH FITCH: So here's a synchronize sync.

TECUMSEH FITCH： 这同步同步。

TECUMSEH FITCH: Very, very, very early embryo, like two months old.

TECUMSEH FITCH：常常常早期胚胎，大约两个月大。

TECUMSEH FITCH: All of them come from the same founder population of cells in an embryo.

TECUMSEH FITCH：它们都来自胚胎中相同细胞。

He says  you gotta go back to when a fox is a very, very little itty-bitty thing ... TECUMSEH FITCH: An embryo.

他说你必须回到狐狸还一个常常小东西时候… … TECUMSEH FITCH： 一个胚胎。

TECUMSEH FITCH: I think if anything, we're being selected to work together more,   to be able to tolerate being packed in even tighter.

TECUMSEH FITCH：我认为，如果说有什么不同话，那就我们被选中要更多地合作，以便能够忍受更紧密拥挤。

TECUMSEH FITCH: Some of them go into the jaw, and form all these different tissues:   teeth, tail, big parts of the nervous system, major parts of the brain.

TECUMSEH FITCH：其中一些进入下巴，形成所有这些不同组织：牙齿、尾巴、神经系统大部分、大脑主要部分。