And conventionally speaking, current flows from the positive to the negative terminal.

并且按照惯例，电流流动 从正极到负极。

But this means that electrons must flow from the negative terminal of the battery to the positive.

但这意味着电子必须从 电池的负极接正极。

For example, in a typical alkaline double-A battery, zinc metal reacts with hydroxide ions, changing into zinc oxide and releasing electrons at the negative terminal.

例如，在一个常见的碱性 AA 电池中，锌金属与氢氧离子发生反应，转化为氧化锌，并从电池负极释放电子。

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。