So I haven't done magic, I've given you a really fast way to solve a knapsack problem, but it's still exponential deep down in its heart, in something.

所以我并没有施魔法，我已经告诉了你,一种快速解决背包问题的方法了,但是某些方面它的核心仍然是指数增长的。

麻省理工公开课 - 计算机科学及编程导论课程节选

But of course,nobody here is screaming, from which we can conclude none of us really do believe, fundamentally,deep down,that we're going to die.

但当然现在在场没人在尖叫，那我们得出结论，我们中没有人，从根本上相信自己会死。

耶鲁公开课 - 死亡课程节选

Take a deep breath in all the way down to your belly.

向腹部深深吸气。

哈佛公开课 - 幸福课课程节选

These are very deep lesions that go not just on the surface of your skin like a blister would, but down into the dermis or deeper layers of the skins, as well.

这些伤非常深,它们不仅像水泡那样存在于皮肤表面,还深入到真皮层或者皮下更深的地方

耶鲁公开课 - 生物医学工程探索课程节选