Then the first man would speak for half an hour to close the debate.

VOA: special.2009.06.11

Part of it is, it takes me an hour and half to settle myself down enough, that I'm actually paying attention and, be more aware of what happening.

每一次，都需要一个半小时,来让我的头脑镇静下来，然后我才能真正地集中注意，感受身边发生的事情。

普林斯顿公开课 - 人性课程节选

And now it is quite a regular experiment you can take any view you can hop to the scanner in half an hour.

如今，这是一个较为常见的试验,任何东西，只要你可以放进扫描仪，在在半小时之内便可以得到其视图。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Officials say it took staff on Christmas Island about half-an-hour to regain control.

VOA: standard.2009.11.24

I needed about an half hour ahead start on him in the office in order to be sufficiently prepared to visit with him which I did every morning shortly after he arrived.

我需要在他之前,半个小时前就开始工作,为的是做好充分准备,跟他谈话,我每天早上,他到达办公室后都要跟他谈。

普林斯顿公开课 - 国际座谈会课程节选

"Fridays we are only inside for half an hour to gather together.

VOA: standard.2010.06.25

So that right now is going to seem a little bit like a sudden blast of notation, so let's just remind ourselves what we really care about is the idea, it's not the notation, and let's spend the next half hour applying these ideas to an application.

这些看起来就是一些,毫无意义的表达式是嘛,为了更好地学习这些概念,而不是这些表达式呢,接下来的半小时,我们来联系实际

耶鲁公开课 - 博弈论课程节选