To get the most from your exercise plan, experts say adults should get at least two and a half hours of aerobic exercise each week.

VOA: special.2010.06.08

So, for example, we'll spend whatever it is, maybe a week and a half talking about the nature of personal identity, two weeks.

所以，举个例子来说，我们无论花什么，也许一个半星期会谈论,个人身份的本质，二个星期。

耶鲁公开课 - 死亡课程节选

We've spent the last week and a half or so, maybe a bit more, two weeks, talking about arguments for the existence of the soul.

我们已经花了一周半,也许还多点,两周吧,来讨论证明灵魂存在的论证

耶鲁公开课 - 死亡课程节选