And anything beyond that you kind of lose it. I think that we've all had that experience sitting in college where you can be with the professor for about 10 or 15 minutes and then you kind of lose it."

VOA: standard.2010.03.26

Story number two,just like story number one, the spaceship takes off,and about 15 minutes later, it explodes in a horrible accident and everybody on the spaceship, including your friend,is killed.

第二个故事和第一个故事一样，飞船起飞，十五分钟后，它在可怕的事故中爆炸，船上所有人包括你的朋友都死了。

耶鲁公开课 - 死亡课程节选

So, even 15 minutes into the city, inland, it's about five to ten degrees warmer, so.

再往城里走15分钟，到了内陆地区，气温会升高大约5到10度。

旧金山的天气 - SpeakingMax英语口语达人

What I'm going to do for about the next 15-20 minutes is just tell you what the class operation is like so everybody knows.

我接下来15到20分钟要做的是,要告诉你们这个班的管理是什么样的,这样大家都可知道。

麻省理工公开课 - 固态化学导论课程节选

And they'll talk a little bit about-- for 15 minutes-- about the masters, before we jump into our material today, which hopefully will be exciting.

他们会简单介绍一下-,利用15分钟时间，介绍一下硕士课程，然后再开始今天的课程，希望让人兴奋。

哈佛公开课 - 幸福课课程节选

So spend 10 or 15 minutes thinking about this and write it down and bring your responses to class in the next period and we'll talk about that.

花十到十五分钟考虑这个问题,并把答案写下来,将你们的答案带到下次课堂上,我们一起来讨论

耶鲁公开课 - 生物医学工程探索课程节选