Here is an example that shows some very, very metallic elements, groups one and two, and some non-metallic elements over here, five, six and seven.

举个例子,这个例子表明金属元素，第一族和第二族，与一些非金属元素,在这里，第五族，第六族，和第七族。

麻省理工公开课 - 固态化学导论课程节选

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

We're interested only really in two things: One, can you differentiate between duple and triple meter; and two, can you recognize some very basic rhythmic patterns?

我们这里只关注两件事,一,你能不能区分两拍子和三拍子,二,你能不能识别一些简单的基本节奏形式

耶鲁公开课 - 聆听音乐课程节选

At that point,the gods don't like it because like the Judeo-Christian god, they want to have some boundary between the two,but for them it's very important, because the boundary is far from clear.

这样的话,诸神自然不高兴,就像犹太-基督教中的神灵一样,诸神需要人神之间有一道界限,这对诸神而言是非常重要的,因为界限本身就是模糊不清的

耶鲁公开课 - 古希腊历史简介课程节选

Some of you are going with a very slow tempo: one-two, one-two.

有些人会觉得是非常慢的速度,一-二,一-二

耶鲁公开课 - 聆听音乐课程节选