And under that model we see,to extremes on many levels.

根据该模型，我们在许多层面上都走了极端。

哈佛公开课 - 幸福课课程节选

The hacker editions -- we don't offer specific walkthroughs since we assume that that crowd generally is ready to dive into the PDF alone.

黑客版--我们不会提供走查的细节,因为我们假设大家都准备好了,独立地投入到PDF中。

哈佛公开课 - 计算机科学课程节选