So there's nothing naturally going on unless we were to introduce it ourselves in our body that we know of, at least, that involves lithium.

因此，在正常情况下,什么都不会发生，除非我们有意识地摄入锂,起码在我们知道某些活动需要锂的情况下。

麻省理工公开课 - 化学原理课程节选