Officials say they have carved out nearly 20 kilometers of fire lines to slow the advance of the flames.

VOA: standard.2009.09.01

So instead of having 20% of people's time spent on their own projects, I make people hang out with each other.

我让大家都待在一块儿,而不是将那20%的时间，用在自己的工作上。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

We have the preamble, and the historical background to the covenant in God's summary introduction to the people in Exodus 20: "I am Yahweh who brought you out of the land of Egypt."

我们有开场白，签订契约的历史大环境,就像《出埃及记》20中上帝总结性的介绍：,“我是将你们从为奴之地领出来的耶和华“

耶鲁公开课 - 旧约导论课程节选

But the Interfax news agency quotes unnamed law enforcement officials as saying more than 20,000 out of the current 50,000 troops currently in Chechnya could be withdrawn.

VOA: standard.2009.03.26

All right. So now all we have to do is figure out this probability of backscattering.

在乘以12。20厘米,好，现在只要。

麻省理工公开课 - 化学原理课程节选

When Bill McKibben wrote "The End of Nature" 20 years ago, he thought that if he simply pointed out ecological problems, people would do something about them.

VOA: standard.2010.04.21

Suppose someone is investing your money and he announces, I have had very good returns. I have invested and I've produced 20% a year for nine out of the last ten years.

假设一个人帮你投资,而且他声称,我投资回报很高,我过去的十年中有九年的收益都是20%

耶鲁公开课 - 金融市场课程节选

"But the hitch is now news coming out of Tehran, which suggests they may be actually looking to purchase at more highly enriched levels up to 20 percent.

VOA: standard.2009.10.19

Now, the problem, or one of the challenges with clinical trials of vaccines is that you have to enroll a lot of patients into clinical trials because only a few are going to get sick in any case, only 20 out of 100,000.

现在的问题是,这也是疫苗临床试验的挑战之一,临床试验必须包括足够多的病人,毕竟只有一小部分人会被传染,十万人里面只有二十人被传染

耶鲁公开课 - 生物医学工程探索课程节选

On January 24, Pope Benedict lifted the excommunication of British-born Richard Williamson and three other bishops to try to heal a 20-year-old rift that began when they were thrown out of the Church for being ordained without the permission of Pope John Paul II.

VOA: standard.2009.03.12

Mr.Ban welcomed President Hamid Karzai's announcement Tuesday that he would accept a runoff with his closest rival, Abdullah Abdullah, after the U.N.-backed audit of the August 20 vote found nearly a quarter of all votes were fraudulent and had to be thrown out.

VOA: standard.2009.10.20

The national reports clearly, from 20 countries out of the 21 countries in the region, Iraq was the only country that could not report, for understandable reasons - all 20 countries have shown that they have weak programs, weak surveillance, and that the coverage is very,very poor.

VOA: standard.2010.07.07