two or two and a half lectures, where I am going to be talking about the basic premises of this course.

两节或两节半课，我将会谈到,本课程的基本前提。

哈佛公开课 - 幸福课课程节选

Second, I'd like to identify two key questions that I really think important for you to be thinking about and addressing in the area of new technology and education.

接着确定两个关键问题,这两个问题很重要,你们要好好想想怎样,在新技术和教育中定位。

麻省理工公开课 - 媒体、教育、市场课程节选

So in terms of thinking about ethane, we actually have two bond types that we're going to be describing just in terms of the carbon-carbon bond and then the carbon h bonds.

对于乙烷，我们有两种键,我们继续讨论一下,碳碳键,和碳氢键。

麻省理工公开课 - 化学原理课程节选

And what we'll be doing is, early next week we'll be distributing code, which we'll ask you to study, about two or three pages of code, and then on the final we'll be asking you questions about the code.

我们现在要做的就是，在下周前半部分我们会发一些代码，给你们去研究，大概有两三页纸，然后在期末的时候,我们会问你一些有关代码的问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

Here I just show tissues at two levels of magnification and when we think about tissues we're going to be interested in a couple of different characteristics.

这里我就给你们展示一下,从两个不同水平看到的组织,当我们研究这些组织时,我们将会对它一大堆不同的特点产生兴趣

耶鲁公开课 - 生物医学工程探索课程节选

It's in here to--intended to do two things: One to show you something about the method that we will be using in here and two, to show you something of the level of this course-- the level of the course.

这个测试的目的是,第一,向你展示一些我们的教学方法,第二,告诉你本课程所处的水平,本课程的水平

耶鲁公开课 - 聆听音乐课程节选