Cation: an ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.

阳离子：带有正电荷的一个或一群离子，特点为在电解中向阴极运动。

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If instead we had a positive ion, a cation, what we would have to do is subtract 1.

如果我们有一个带正电的离子，一个正离子，那我们就需要再减去一个。

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