Public theaters during this time were usually three floor levels high and were built around a stage area where the actors performed.

VOA: special.2010.01.06

Last lecture, you might have thought this was a SHASS class, it's not like a philosophy class, and it was important to set the stage for what we're going to talk about, but we talked about very high level things.

上一节课，你们可能认为,这课没什么意思，这可能不太像一门哲学课，为我们所要讨论的去做好准备,是很重要的，我们上节课讲的是一些比较高层次的的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

Then you get successively deeper, II through IV, slow, irregular, high amplitude delta waves, and then once you reach stage IV you start going up again, up through stage III and II.

然后睡得越来越深，从第二到第四阶段，慢，不规则，高振幅的δ波，等你到达第四阶段，你又开始返回，第三阶段和第二阶段。

耶鲁公开课 - 心理学导论课程节选