The polis is not merely a city state in the same way as,let us say, the Mesopotamian city states of the third millennium B.C. Were.

那就是城邦不仅仅是一座城市,并不是像,我们说的公元前三千年的,美索不达米亚的城市

耶鲁公开课 - 古希腊历史简介课程节选

Well, one way to get proteins, and it was first used in Hepatitis B, is to find patients, find individuals who are already infected with Hepatitis B.

获得蛋白质的方法之一,也是首次用于制造乙型肝炎疫苗的方法,就是寻找患者,寻找到一些已经感染乙肝的患者

耶鲁公开课 - 生物医学工程探索课程节选

And it tries to find the shortest way, subject to those constraints, to get from Point A to Point B. And there are many, many other instances of this kind of thing.

然后谷歌地图开始寻找，满足这些条件的从A地到B地最短路径,还有很多这样的例子，明天我们会再复习一遍这些内容。

麻省理工公开课 - 计算机科学及编程导论课程节选

Put the same point the other way around: If I can imagine A without B, then A and B have to be logically distinct things.

把这点推而广之,如果我可以想象A在没有B的情况下存在,那么A和B在逻辑上是相互独立的

耶鲁公开课 - 死亡课程节选

She costs C for sure, that's a wash because B, the way we've worked things out, B was $2, C was $1, So B/2-C is a wash.

她承担C的成本,收益是零,因为B,按我们设定的金额,B是2美元,C是1美元,所以B/2-C是零

耶鲁公开课 - 博弈论课程节选

A very important result is that if two vectors are equal, if A = B, the only way it can happen is if separately Ax is equal to Bx and Ay is equal to By.

这里有一个相当重要的结论,如果两个矢量相等,例如 A = B,那么当且仅当,Ax = Bx 和 Ay = By 分别成立

耶鲁公开课 - 基础物理课程节选

But is has another sense which is not a rhetorical sense, because metaphor is sort of the heart of rhetoric, the rhetorical sense A is B--when, by the way, A we know perfectly well that A is not B. How can A be B? A is only A.

但是is有另外一个意思，修辞之外的一种意思，因为暗喻差不多可以说是修辞的中心，修辞中所说的A是B，顺便说一下，我们十分清楚地知道A不是B，A怎么能是B呢，A就是。

耶鲁公开课 - 文学理论导论课程节选

A to B is one distance, which is a large one, and B to C is only half that distance, and that's because of the way the Greeks laid this thing out with their two to one ratios, three to two ratios and so on.

到B是一个距离,比较大,而B到C只有半个距离,因为希腊人,用诸如二比一,三比二,之类的频率比来安排音阶

耶鲁公开课 - 聆听音乐课程节选

It turns out in the case of Hepatitis B, the way the lifecycle proceeds-- the cells make too much of the protein and not all of it gets assembled into the virus.

结果显示,在乙肝的病案中,病毒生命周期的发展情况,细胞制造了大量的蛋白质,但并不是所有的蛋白质都会组合成病毒

耶鲁公开课 - 生物医学工程探索课程节选

Here's another way I could do that.

如果b是偶数的话，a的b次方。

麻省理工公开课 - 计算机科学及编程导论课程节选

Because if B was just another word for, another way of talking about, A, then to imagine A existing but B not existing would be imagining A existing but-- well, B is just A--A not existing.

因为如果B只是,A的另一种表达方式,那么认为A存在而,B不存在就是认为A存在但,B,也就是A,却不存在

耶鲁公开课 - 死亡课程节选