So, here we have this soda with lithium citrate, some of you might be familiar with this, soda is called 7-Up.

最后他们决定用锂来做，所以我们就有了一种含有柠檬酸锂的汽水，你们中的有些人可能对它很熟悉，它就是七喜。

麻省理工公开课 - 化学原理课程节选

And they wanted to use a soluble salt of citric acid, so they could have used sodium, they could have used potassium.

而且他们想用一种柠檬酸的可溶性盐，他们本可以用钠，也可以用钾。

麻省理工公开课 - 化学原理课程节选