We've been talking about single cell or some subset of cells and propagating them so that you get a larger population of cells.

我们说到了一个细胞,或者一组细胞进行繁殖以后,你就能得到数目可观的细胞

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The more cells I have the faster they can grow, fewer cells grows more slowly.

细胞数目越多增长就越快,细胞数目越少增长就越慢

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It goes - going through this process of amplifying divisions, every division increasing the number of cells by a factor of two and these cells becoming more differentiated around the way.

它经历了一系列扩增性的分裂过程,每次分化,细胞数目都翻一番,而在此过程中细胞分化得更成熟

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Maybe by the different branching patterns that these processes had, or how many processes were on a different kind of neuron, you'd be able to tell something about its function and probably something about where it came from.

通过辨识分化过程中的,不同突起的分支模式,或是不同神经元各异的突起数目,也许你也能分辨出这一细胞的功能,或许还有它的由来

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This makes sense; the rate at which the cell population is growing, the derivative dX/dt, is proportional to the number of cells I have.

这个说的通,细胞数目的增长速度,就是导数dX/dt,和细胞数目呈比例关系

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If X is the number of cells, then the rate of change of X, dX/dt, the rate of change of the cell population, how fast division is taking is proportional to the number of cells I have.

如果X是细胞数目,那么X的改变率就是dX/dt,就是细胞数目的改变率,分裂的速度有多快,和细胞数量呈比例关系

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