So, this raises kind of an interesting question in terms of what the difference is between these two cases, and we're talking about numbers of energy.

那么，到这里就出现了一个很有意思的问题,那就是下面这两种情况的区别在哪里？,当然我们关心的是能量的多少。

麻省理工公开课 - 化学原理课程节选