I don't expect you to learn that, or even retain it unless I explain the concepts in class, or unless they're explained quite well in the paper itself.

我不要求你们掌握这个,更别提记忆了,除非我在课上做了讲解,或者它们在文章中解释的非常透彻了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And 95% of income must be paid out--they can't retain earnings.

5%的收入必须分配掉,不得留存

耶鲁公开课 - 金融市场课程节选

This isn't a tracking device in the traditional sense -- while it provides location info, it doesn't retain coordinates, so you can't pop this on a vehicle to see where your kids really go after school.

ENGADGET: BluTracker lets you locate your stuff within 2,500 feet, we go hands-on (video)

Through May and early June his curds got better but didn't retain as much moisture as he would like.

WSJ: It's Easy to Be Cowed When Trying to Milk a Water Buffalo

The simple message from Moody's to Germany is that it won't retain its AAA rating if the eurozone continues on its course of muddling through each successive crisis.

BBC: Eurozone nations�� sovereignty v AAA