That may have helped smooth out any compatibility issues between the two sets of cells.

这可能有助于消除两组细胞之间的任何排异问题。

So let's say that when this set of cells is at rest they're red and then they turn green as the wave of depolarization moves through them.

我们假设，这些细胞处于静息状态时是红色的，而当除极波流过这些细胞时，它们变成绿色。

Now, among the brain cells that have cannabinoid receptors on them are a special set of cells that are thought to regulate eating -- known as POMC neurons.

现在， 在其上有大麻素受体的脑细胞中， 有一组特殊的细胞被认为可以调节饮食— —被称为 POMC 神经元。

Now if we freeze this " wave of depolarization" as it's moving through the cells, half of the cells are positive or depolarized and half are negative or resting, and so there's a difference of charge across this set of cells.

当除极波正在流经这组细胞时，如果我们把它“冻结”起来，这时一半的细胞的带有正电（去极化的）而另一半则带负电（处于静息状态），因此在这组细胞里存在两种不同的电荷。