You can see that as you fill up your periodic table, it's very clear. But also we'll tell you a pneumonic device to keep that in mind, so you always remember and get the orbital energy straight.

在你们填周期表的时候，非常清楚但是我们也要告诉你们,一个策略去记住它，所以你们总是记得,并得到连续的轨道能量。

麻省理工公开课 - 化学原理课程节选

Whenever you hear the term ionization energy, make sure you keep in mind that unless we say otherwise, we're talking about that first ionization energy.

但无论什么时候你听到电离能这个词，一定要记得，除非特别说明，我们都是在说第一电离能。

麻省理工公开课 - 化学原理课程节选

So it's going to keep in mind the limitations, so let's start off with talking about ionization energy.

那么让我们将这些局限性记在心里，继续来讨论一下电离能。

麻省理工公开课 - 化学原理课程节选