And so this lower level is called a bonding orbital, and it is a bonding molecular orbital.

所以能级较低的轨道叫做成键轨道，这就是成键分子轨道。

麻省理工公开课 - 固态化学导论课程节选

So it's going to be favorable for the electrons instead to go to that lower energy state and be within the molecular orbital.

所以对于电子来说,更倾向于能量更低的轨道,呆在分子轨道里。

麻省理工公开课 - 化学原理课程节选

What is happening is it turns out that putting the electrons in that lower energy state is stabilizing that molecule So that works.

发生的就是,把电子放在低能级状态,稳定了分子，因此这就行得通了。

麻省理工公开课 - 固态化学导论课程节选

And what you can see directly from looking at this energy level diagram, is that the molecule that we have is now more stable in the individual atoms.

你从直接看,能级图中会发现，分子比单个的,原子能量更低。

麻省理工公开课 - 化学原理课程节选

So, in talking about covalent bonds, we should be able to still apply a more general definition of a chemical bond, which should tell us that the h 2 molecule is going to be lower in energy than if we looked at 2 separate hydrogen atom molecules.

那么，既然提到了共价键，我们应该还可以,给化学键下一个更普遍的定义,那就是告诉我们氢分子能量应该更低,与两个分开的氢的单原子分子相比。

麻省理工公开课 - 化学原理课程节选