It will move from high to low concentration,

从高浓度一侧流向低浓度一侧
that is,it'll move from inside the cell to out.

也就是从细胞内流向细胞外
If sodium--

如果钠--
if there's a channel for sodium and it happens to be open,

如果钠离子通道处于开放状态
and that's what this is shown here,

你们就会看到这样的状况
a channel with the lid off means the channel is open,

通道暴露就是说通道是开放的
then sodium can pass from its high concentration to low concentration

钠离子可以从高浓度侧流向低浓度侧
or from the extracellular space to the intracellular space.

即从细胞外流向细胞内
The cell is in dynamic equilibrium,

细胞处于一个动态平衡
that in its sort of steady state,

也就是处于稳态
it's natural state,

细胞的自然状态
there is this active machine

钠-钾泵这样活跃的机器