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

And, the values that it takes can be broken into three groups.

它所代表的值,能被分为三部分。

麻省理工公开课 - 固态化学导论课程节选

And the cortex can be broken up into different parts or lobes.

大脑皮层可以被分为几种不同的脑叶

耶鲁公开课 - 心理学导论课程节选

If you look at the percent of time people in society were involved in various activities and broken into agriculture versus everything else, in ancient Egypt it looked like this.

如果你留意一下,人们从事各种社会活动的时间比例,被分为农业生产和其他活动两类,在古埃及,时间分配是这样的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

There are ordinary, common, profane days, work days.

具体被分为平凡日，或者说普通日，世俗日和工作日。

耶鲁公开课 - 旧约导论课程节选