脑细胞内部有很多重要的事情在发生。

There are lots of important things going on inside the brain cells themselves.

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海水不仅不能抽走植物细胞里的水分，海水中的盐分反而会进入细胞内部，这就是所谓的反渗透。这种反渗透能力增加了细胞的强度。

Instead of freshwater moving out of the plant cells, salt from the seawater enters, reverse osmosis, and this actually strengthens the cells.

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这就确保细胞内部的生化与外部不同。

This ensures that the biochemistry of the inside of the cell is different from the outside.

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They often involve the generation of what are called 'second messenger' molecules which carry the signal further into the cell.

过程中通常会生成一种叫做,第二信使的分子,将信号更深入地传递至细胞内部

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It's really just the result of the virus dividing within cells of your skin, and producing a lot of dead cells.

这便是病毒在皮肤细胞内部,分裂的结果,这个过程会产生大量的死亡细胞

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So the influx of ions from the outside of the cell to the inside of And you can think of ion channels as being gated, by gated it means the gate can be closed and no ions are going through, as in this case here.

下面以离子从细胞外部流入内部,你可以把离子通道想象成是有闸门的，也就是说闸门可以关上,这时没有离子能通过，就像这种情况。

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