I would have never left Liberia,". He says then-Nigerian-President Olusegun Obasanjo approved of his traveling overland to Chad in 2006.

VOA: standard.2009.11.10

You can imagine somebody who says, "Look, it would be better never to have had the taste at all " than to have the taste and then not be allowed to have the entire meal."

你可以想象会某人说，“尝一口然后被禁止吃完整顿饭,还不如从来就没尝过一口呢“

耶鲁公开课 - 死亡课程节选

So if we say that l is just talking about our kinetic energy part, our rotational kinetic energy, and we know that electrons have potential energy, then it makes sense that l, in fact, can never go higher than n.

如果我们说，l仅仅是,描述动能项，我们的旋转动能，我们知道，电子有势能，所以可以理解，l不能比n高。

麻省理工公开课 - 化学原理课程节选