Second step, hm. That also looks constant, you think? Oh but wait a minute. I'm accessing s.

第二步，恩，看起来也像常量,你认为呢？等等，我在进入这个数组。

麻省理工公开课 - 计算机科学及编程导论课程节选

Often a good thing to start with is to put the lowest ionization energy atom in the middle, and if you don't have charge separation then go with that structure, but if you do find you have a lot of separation, such as the case in negative 2, positive 2, and minus 1, then you want to say wait a second, this is really bad in terms of formal charge, let me go ahead and see what other options I have here.

通常一开始把电离能最低的原子,放在中心位置就很好了，如果你发现电荷没有分开,那么这个结构就没问题了，但是如果你发现有很多分开的电荷，比如这种情况，有负二，正二和负一，那么你会想要说等一下，从形式电荷来看这很不好，让我去看看其它可能的选择。

麻省理工公开课 - 化学原理课程节选

Some of you might be saying in your heads, wait a second, I happen to know, I happen to remember from high school, p have different energies then, for example, s orbitals.

有些人,可能会心里想：,等等，我记得，高中的时候学过，轨道，that，p，orbitals,和s轨道，的能级是不同的。

麻省理工公开课 - 化学原理课程节选