U.N.chief Ban Ki-moon told reporters he would go to the Danish capital next week to open the high-level segment that he expects will draw more than "I am encouraged and I am optimistic.

VOA: standard.2009.12.09

I am talking at the level of this is Dalton's model, but then there is a meta knowledge here of how you develop models in general.

我一是在谈论道尔顿的模型，但是，还有些知识,关于你如何建立大概的模型。

麻省理工公开课 - 固态化学导论课程节选

Because if the change was not possible on the individual level, ? on the society level,why am I doing what I am doing?

因为如果从个人层面或社会层面来说，改变都是不可能的，那我在这里干什么？

哈佛公开课 - 幸福课课程节选

And I am going to put up this energy level diagram again.

我准备再次贴起,这个能级图。

麻省理工公开课 - 固态化学导论课程节选

O Right there, order n. So I have order n operations at each level in the tree. And then how many levels deep am I? Well, that's the divide, right? So how many levels do I have?

在这儿,所以我在树的每个层次都要做O的操作,那个这棵有多少层呢？,这是一个除法，不是吗？

麻省理工公开课 - 计算机科学及编程导论课程节选