How had the country existed half-slave and half-free for so many years, Lincoln asked.

VOA: special.2009.06.11

I welcome that because I've seen this subject for God knows how many years.

我鼓励你们这么做是因为我教这门课,已经很多年了

耶鲁公开课 - 基础物理课程节选

I don't know how many years it was.

我忘了是多少年前。

艺术画廊，来吧 - SpeakingMax英语口语达人

The lack of housing is also a big issue,partly because of the years of conflict, which have not given us a clear idea of how many homes have actually been destroyed in Afghanistan or badly damaged.

VOA: standard.2009.09.13

One of the stories that is often told is the goldsmith banker's story that goes back I don't know how many hundred years.

经常被人们提起的一个故事是,金匠银行家的故事,它可以追溯到,我不知道是几百年以前了

耶鲁公开课 - 金融市场课程节选

By your estimation, how many more years before we will see Afghan National Army and the police force in enough numbers to stablize the country?

根据您的估计，还要多少年,才能有足够的阿富汗国民士兵和警察,来维持这个国家的安定？

普林斯顿公开课 - 国际座谈会课程节选

I'm not sure how many of us would decide the last thing we wanted to do with our remaining years is to spend it in college.

我不确定我们中有多少人会决定,在最后几年里要做的最后一件事是,上大学。

耶鲁公开课 - 死亡课程节选

The question was how many rabbits do you have at the end of a year? At the end of two years? At the end of more than that number of years, and so. We can do this with the following level definition. We're going to let pairs of 0, the number of pairs at month 0, actually it would not be it would be 1.

在下一个月末的时候让我们假设,这2只小兔子也有了后代,同样是一公一母,问题是一年后你会有多少只小兔子？,两年后呢？更多年后呢？,我们可以用接下来的等级说明来解释，在第0个月有0对兔子。

麻省理工公开课 - 计算机科学及编程导论课程节选

So biomedical engineers have been working for many years on how to design replacement parts for joints like the hip: the artificial hip is the most well developed of those.

因此,生物医学工程师花了很多年时间,致力于设计像髋关节这样的关节替代品,尤以人工髋关节的研究最为成熟

耶鲁公开课 - 生物医学工程探索课程节选

The best work on this has been done by Elissa Newport and Sam Supalla who have studied people who have been in the United States for many, many years like 30, 40 years and seeing how well they have come to speak English.

在这方面最佳的研究,是由伊莉萨·纽波特,和萨姆·苏普拉所进行的,他们研究了在美国生活了,三四十年以上的人们,探究了这些人们讲英语的流利程度

耶鲁公开课 - 心理学导论课程节选