"Certainly the good news is that the rate of deaths of children under five years of age continued to decline in two thousand eight.

VOA: special.2009.09.28

There's been a lot of work done on these over the years, but in fact, it's pretty hard to invent a good hash function. So my advice to you is, if you want to use something was a hash, go to a library. Look up a good hash function.

已经做过了很多的尝试和努力,但是事实是，很难发明出一个好的哈希函数,所以我给你们的建议是,如果你们想使用哈希功能,到函数库中查找一个好的哈希函数。

麻省理工公开课 - 计算机科学及编程导论课程节选

One that was developed a number of years ago but has been perfected and refined in recent years with very, very good research.

该概念很多年前就已经提出了,但在近年通过高水平的研究才被改进完善

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And so you are really good friends with like all the people you're in class with, because you know them since like four years and you have all classes together with them."

VOA: special.2009.11.05

At the end of two years, we're not looking so good. At the end of three years, we are now in Australia. Overrun with rabbits.

就像到了澳大利亚一样,到处是兔子,实际上我不认为这样会返回什么结果。

麻省理工公开课 - 计算机科学及编程导论课程节选

"I think we're on a very good path to making a sea-change in our missile defense posture within the coming three-to-five years."

VOA: standard.2010.03.26

Good scene. It's good because I think it conveys something of the flavor of Machiavelli's thought in Italy for 30 years under the Borgias.

我觉它好是因为片中涵盖了,一些马奇亚维利思想的味道,即意大利在，Borgias，家族,统治下的30，年。

耶鲁公开课 - 政治哲学导论课程节选

"If one country makes an immense step forward, even like the U.S.has done over the years with a very strong regulatory agency like FDA, with very good law enforcement in place,with good coordination around the world, it's not sufficient for the rest of the world.

VOA: standard.2010.06.07