And a proton is just a hydrogen atom that's lost its electron.

而这个质子只是一个失去了电子的氢原子。

So, in this case, the hydrogen sulfide could have lost electrons in a redox reaction.

因此，在这种情况下，硫化氢可能在氧化还原反应中失去了电子。

Now its valence shell is one lower, but we can say it's lost that one electron that was out there.

现在它的价壳层低了一个，但我们可以说它失去了外面的那个电子。

Ions that have lost electrons, and therefore take on a positive charge, are cations. Whereas ones that gain electrons to become negative are anions.

失去电子并因此带正电荷的离子是阳离子。而那些获得电子变成负离子的是阴离子。