So let's just think exactly what this means, and that means that if we take away function and we define it in terms of n, l and m sub l, what we're defining here is the complete description of an orbital.

让我们来考虑一下这是什么意思，这是说如果我们不考虑波函数,而是用ｎ，ｌ，ｍ下标ｌ来定义它，我们定义的,是一个轨道的完整描述。

麻省理工公开课 - 化学原理课程节选

And so the whole definition of what a recession is is evolving and... we could be in a similar kind of situation where job...number of jobs goes up or down and maybe output doesn't.

因此，经济衰退的完整定义,不是一成不变的。,有时可能出现这种情况,失业率也会上升或下降,而国民产量并无波动。

斯坦福公开课 - 经济学课程节选