The electrons travel through, say, a light bulb, and then return to the battery at the positive terminal, where they're accepted by manganese dioxide.

电子穿过灯泡之类的用电器，然后回到电池正极，被二氧化锰接收。

This allows excess electrons to build up in the negative terminal, called the cathode, while an electron vacuum of sorts occurs in the positive terminal, the anode.

这允许多余的电子在负极端子（称为阴极）中积聚，而在正极端子（阳极）中会出现某种电子真空。

Picture the positive terminal as the start of our river, up in the mountains, and the negative terminal as the end of the river, draining out into the ocean.

想象正极终端是我们河流的起点，在高山上，负极终端是河流的末端，流入海洋。

Notice, by the way, that we’ve assigned the current directions the way we have, because they make sense with the orientation of the batteries, going from the negative to positive terminal.

请注意，顺便说一下， 我们已经按照我们的方式分配了电流方向， 因为它们对电池的方向有意义， 从负极到正极。

Notice, by the way, that we've assigned the current directions the way we have, because they make sense with the orientation of the batteries, going from the negative to positive terminal.

请注意，顺便说一下，我们已经按照我们的方式分配了电流方向，因为它们与电池的方向有关，从负极到正极。