If you suspect that seeds may be diseased, place them in water at fifty degrees Celsius for twenty minutes.

VOA: special.2009.03.03

They saw certain patterns or certain ways of elaborating patterns that the teachers were talking about and, lo and behold, the fifty minutes was over and everybody had had a pretty good time.

他们听着老师以某一种,特别的方式进行讲解，瞧，短短的五十分钟很快就过去了！,而且每个人都听得很开心。

耶鲁公开课 - 文学理论导论课程节选

If you had more than fifty minutes, you could actually make ample use of it.

如果你有超过50分钟的教学时间，你大可尝试去做。

耶鲁公开课 - 文学理论导论课程节选

"In fifty-nine minutes I'm gonna' start killing passengers." "You don't want innocent people dying,do you?"

VOA: special.2009.06.12

Two hours,you can be on a damn train to New York City and you'll be lucky if you get eighty miles in two hours, or an hour and fifty minutes.

要知道,两个小时都可以做火车去纽约了,但如果是步行,八十公里你一个小时五十分钟,到两个小时内走到就算不错了

耶鲁公开课 - 1871年后的法国课程节选

They returned to Roosevelt Field eight days, fifteen hours and fifty-one minutes later.

VOA: special.2009.03.18

Okay. I can't read it but two minutes and fifty seconds, two minutes--this one's only two minutes, three minutes and twenty seconds, that kind of thing.They're short, whereas Beethoven,as mentioned,is much longer.

好，我读不出但是它唱2分50秒，两分钟，这首歌只有两分钟，3分20秒，基本都是这么长，它们都很短，但是我们刚才说的贝多芬就要长的多。

耶鲁公开课 - 聆听音乐课程节选

The reason--unless you can take about eight hours to do it--because, the way you're going to do it is you're going to take a train that goes one hour and fifty-eight minutes to Paris, and then you're going to take another train that zips down here in about four hours to Bordeaux, but you're paying by kilometer.

除非你想坐八个小时的火车,因为,你要走的路是,坐上火车,先花一小时五十八分钟去巴黎,然后以很快的速度用四小时到这儿,波尔多,按公里计费

耶鲁公开课 - 1871年后的法国课程节选