In the second century you can't really use the term "orthodox Christianity" versus "heretical Christianity," because there wasn't--orthodoxy hadn't been established,yet.

在主后第二世纪你不能用,和“基督教异教“相对的“东正教“,因为当时正教还没建立。

耶鲁公开课 - 新约课程节选

So if we're talking about the fourth excited state, and we talk instead about principle quantum numbers, what principle quantum number corresponds to the fourth excited state of a hydrogen atom.

如果我们说的是,第四激发态，我们用,主量子数来描述，哪个主量子数对应了,氢原子的第四激发态？

麻省理工公开课 - 化学原理课程节选