And those are two things that you'd like to do with every looping construct you write: you'd like to be able to assure yourself that they will always terminate, and then the second thing you'd like to do, is to assure yourself that it does give you back a reasonable answer.

就是现在我有了能去检查程序,是不是做了正确的操作的能力：,这就是你们在写每个循环程序的时候,都要注意的两个事情：,第一件事情是要确保程序可以终结，第二件你要做的事情,就是要确保程序返回了正确的答案。

麻省理工公开课 - 计算机科学及编程导论课程节选

What second millennium Hebrews and early first millennium Israelites or Judeans, Judahites, actually believed or did is not always retrievable, in fact probably not retrievable, to us. We have some clues.

西元前2000年的希伯来人和前1000年早期的以色列人,或者说犹太人，犹太民族所信仰的和所做的，不是每次，都能复原，事实上可能无法复原，我们掌握了一些线索。

耶鲁公开课 - 旧约导论课程节选

The second thing that he found was this group, they were always asking questions, -always asking questions, initially of their boss, later of their employees, of their partners, children, parents, friends.

他发现的第二件事是，这部分人，一直在问问题，一直问问题，最初是问他们的老板，后来是问他们的雇员，他们的搭档，孩子，父母，朋友。

哈佛公开课 - 幸福课课程节选