And it turns out that when you constructively have two p orbitals interfere, and when I say constructively, I mean they're both either positive or they're both the negative lobes, that's when you got bonding.

当两个ｐ轨道,相长干涉时，我说的相干相长，意思就是说它们要么都是,正的叶瓣要么都是负的叶瓣，这时就能成键。

麻省理工公开课 - 化学原理课程节选

Yeats has a long career, really beginning in the late nineteenth century.

叶芝有很长一段时间，其实是从19世纪后期开始。

耶鲁公开课 - 现代诗歌课程节选

You can see if we combine the s with the top lobe of the p, they're going to constructively interfere because they have the same sign.

你们会看到如果我们把s轨道和p轨道的上叶结合，它们是相长干涉,因为它们负号是相同的。

麻省理工公开课 - 化学原理课程节选