The idea for the book on death row originated with Sam Houston State University English Professor Paul Ruffin, who teaches a class in which students develop a book from inception to printing.

VOA: standard.2009.10.21

Now, the most interesting one for our class the equation of state that's the most interesting, is the Van der Waals equation of state, developed by Mr. Van der Waals in 1873.

由范德瓦尔斯在1873年发展起来,这个方程的美妙之处，在于它只需要两个参数，下面我们来研究一下。

麻省理工公开课 - 热力学与动力学课程节选

Such states, of course, did not need a bureaucracy for there were no vast royal or state holdings that needed management and not much economic surplus to support a bureaucratic class.

国家无需官僚体制,因为没有庞大的皇室家族,和国家财富需要管理,也没多少经济盈余能够维持官僚阶级

耶鲁公开课 - 古希腊历史简介课程节选

One of the sentences that I'll repeat throughout the class is that happiness is much more contingent on our state of mind than our status or the state of our bank account.

有一句话我会在课程中经常引用,快乐由我们的精神状态而定，而不是社会地位或银行存款。

哈佛公开课 - 幸福课课程节选