In fact, there are some very old books that show this as the average, the sum divided by two arithmetic mean, but the modern practice is to use the geometric mean.

事实上，一些很老的书籍上,平均的定义就是算数意义的，总的来说被分为两种算数意义，但现代我们多用几何意义。

麻省理工公开课 - 固态化学导论课程节选

So it's like a tie between the old and the new and I think the CD-ROM does that clop and CD old pictures, the festival dress.

这就像过去和现在之间的纽带,我认为之前所说的光盘能让,我们聆听到木屐的声音，唱片的老照片能让我们欣赏到和服。

麻省理工公开课 - 媒体、教育、市场课程节选

And so frequently what we try and do is, we take a new problem and map it onto an old problem so that we can use an old solution.

我们经常做的一件事就是，我们处理一个新问题时,把它归结为一个老问题,以便我们能采取老的解决方式。

麻省理工公开课 - 计算机科学及编程导论课程节选

So we have to assume that the occasion for this poem is some kind of question posed by John Milton, Sr., a question like, "To what end am I supporting you, Son?

我们可以假定这个诗的起因是,老约翰弥尔顿问小弥尔顿，“我到底为什么要资助你，儿子？“

耶鲁公开课 - 弥尔顿课程节选

I always want to--modern football helmets which are monstrous-- I'm so old we used to play with leather ones without a face mask.

现代美式橄榄球的面具就跟怪兽一样的,我老了,我们小时候打球都是皮质头盔而且没有面具的

耶鲁公开课 - 古希腊历史简介课程节选

So let's listen to a track here, a sax solo and I am going to try to keep-- make some sense out of this-- because it gets more and more complex-- by following the electric bass underneath so let's listen to an old tape.

那么我们听一下这段音轨,一段萨克斯独奏,我会尽量从中,理出一些头绪,因为我们的音乐片段会越来越复杂,大家可以跟着底下电贝斯的节奏,好的,我们来一下老磁带

耶鲁公开课 - 聆听音乐课程节选

So, even if we were to agree with the pessimists that it would be better never to have been born at all, as the old joke goes, show me one person in a thousand who's so lucky, right?

所以，即使我们要同意悲观主义者的观点,根本不出生更好，就像老笑话讲的那样，给我千里挑一找到一个走运的人？

耶鲁公开课 - 死亡课程节选

When I ran it up here, with the old Fib, and we printed the result, and I ran it with Fib 1 down here.

当我运行到这里，也就是老的Fib函数，我们打印这个结果，当我在下面调用Fib1时,也打印了结果。

麻省理工公开课 - 计算机科学及编程导论课程节选