Bohr expressed the quantum condition by the angular momentum, quantum condition in the following manner.

波尔阐明了他的量子理条件,通过角动量，和以下的量子条件进行量子化。

麻省理工公开课 - 固态化学导论课程节选

For those of you who still do believe in the existence of souls I suppose you could take a great deal in discussions that follows as some form of large conditional or subjunctive if there were no souls then here's what we have to say.

如果你们有人,还是相信灵魂的存在,或者你可以从以下的讨论里,也学到一些东西,把讨论看成有条件性和假定性的,假设没有灵魂,然后就是我们要讨论的东西。

耶鲁公开课 - 死亡课程节选

So we immediately get du at constant S and V is less than zero.

这样我们马上就得到以下结论：,在等熵，等容条件下dU必须小于零。

麻省理工公开课 - 热力学与动力学课程节选