We talked about last time that part of the process of going from this single cell to multi cellular many celled organisms like we are is cell division.

我们上节课说过,从一个单细胞分裂形成大量细胞,构成的器官的过程,叫做细胞分裂

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And that certainly wasn't true way back at the start of A, as the fertilized egg first begins to split and multiply, subdivide and make organs.

显然不是在A阶段这么早就开始的，当受精的卵子开始分裂繁殖，继续分裂，形成器官。

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