This thing better start turning negative soon or we are going to change the way the world works here.

它们很容易一开始就转化成负的,或者我们将取改变那儿工作方式。

麻省理工公开课 - 固态化学导论课程节选

So the idea behind valence bond theory is very easy to understand.

价电子成键理论,非常容易理解。

麻省理工公开课 - 化学原理课程节选

And specifically, when we give them a name it's very clear exactly which orbitals they come from combining, - we're calling these s p 3 orbitals -- that's because they come from combining 1 s orbital and 3 p orbitals.

特别的，我们命名它们,使得很容易看到它们是什么轨道结合而成的，我们叫这些轨道sp3轨道-,这是因为它们是由1s轨道,和3p轨道组合成的。

麻省理工公开课 - 化学原理课程节选