World War Two ended. Enrico Fermi had been the first to use a neutron to produce the radioactive change of one element to another.

VOA: special.2009.06.14

So, regardless of the type of wave that we're talking about, there's some common definitions that we want to make sure that we're all able to use, and the first is amplitude.

所以，不管我们讨论的,是哪种波，它们都有一些我们,能用到的共同的定义,其中第一个就是幅值。

麻省理工公开课 - 化学原理课程节选

So, let's move to our first situation where you could use a "Can" question.

那么，让我们来看看能够使用“Can”问句的第一种语境吧！

Can 课堂 - SpeakingMax英语口语达人

Her best guess is that some schools with a lot of technology will be the first to use them, but only in addition to their traditional books.

VOA: special.2009.08.27

dU=CvdT So du is still going to be equal to Cv dT, and we're still going to be able to use the first law, all these things don't matter where the path is.

于是，第一定律也依旧成立，这些关系都与路径无关。

麻省理工公开课 - 热力学与动力学课程节选

Scott and Irwin were the first to use the Lunar Rover vehicle.

VOA: special.2009.07.29

Right, the first skill we want you to acquire, is we want you to be able to use the basic tools of computational thinking to write small scale programs.

好，我想让你们掌握的第一个技能就是，希望你们能使用,计算思维的基本工具,来编写小规模的程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

These included the first use of "hard hats" to protect the workers' heads and special glasses to protect their eyes.

VOA: special.2010.07.23

And all we can do after we accept this nature is to first understand it through research, and then after we understand it, make the best use of it.

在接受这个本性后，我们唯一能做的,是通过研究首先来理解它，理解它后，好好地利用它。

哈佛公开课 - 幸福课课程节选

The first breeding line is expected to be released this year for use by private seed companies and public soybean breeders.

VOA: special.2009.01.20

c We know it's very specific for light because in this equation is c, the speed of light. So any time you go to use this equation, if you're trying to use it for an electron, just ask yourself first, does an electron travel at the speed of light?

我们知道它只对光适用是因为在这个方程里有,光速，所以下次你们用这个方程前，如果你们要把它用到一个电子上，先问问你自己，电子的运动速度是光速吗？

麻省理工公开课 - 化学原理课程节选

The American Le Mans Series became the first racing event to use the protocols in its Green Challenge competition.

VOA: special.2009.11.03

So I set about on two missions, the first was to visit high schools around country and talk to young people about their use of digital technology and second was to go online and began to look closely at websites, chat rooms, internet list that young people were creating.

我为此制定了两个任务，第一个是拜访全国的高中,与年轻人进行交谈,关于他们对电子技术的使用,第二个任务就是上网,开始认真研究那些网站，聊天室，以及年轻人们所创造的网络世界。

麻省理工公开课 - 媒体、教育、市场课程节选

But traditional guidelines say not to use tPA if more than three hours have passed after the first signs of a stroke.

VOA: special.2009.08.12

So conceptually the key difference here, besides the syntax looking slightly different, it just means that if you want a chunk of code to execute no matter what initially, ; you can use the do while loop; if you want to check a condition first, you can use the while loop.

所以概念上，则关键的区别是，除了语法看起来有点不同，它的意思是如果你想要一段代码,最初无论如何都要执行，你就可以用do，while循环;,如果你想要先检查条件，你可以用while循环。

哈佛公开课 - 计算机科学课程节选

Scholars who work on publishing make careful choices many of the plays about whether to use words from the First Folio,or the Quartos.

VOA: special.2010.01.13

What have we done? We've now got a way of collecting things together, right? And this is the first version of something we'd like to use.

用的一些东西的,第一个版本，现在我已经把它和,一个名字进行了绑定。

麻省理工公开课 - 计算机科学及编程导论课程节选

The expression was first used in the southern part of the United States to describe the use of force to win an election.

VOA: special.2009.02.15

English language experts say Geoffrey Chaucer was the first important writer to use the English language.

VOA: special.2011.01.05

The first involves sheep. Researchers have found that hair sheep are a good source of blood for use in tests to diagnose infectious diseases in people.

VOA: special.2009.08.03

For the first time, scientists around the world had a limitless number of cells they could use to test the effects of diseases, medicines and chemicals.

VOA: special.2010.07.21

But Lincoln was not the first president to use it.

VOA: special.2010.05.10

This is the first tournament of the Football for Hope program, which aims to use the popularity of football to bring social change.

VOA: standard.2010.07.05

U.S Army Sergeant First Class Brandon Lemmons says he passes along each day's information to his commanders, and they use it to map out their relief strategies.

VOA: standard.2010.01.30

Ruhli and his team of researchers at the Swiss Mummy Institute have just completed the first feasibility study of how they could use the technology to reveal a mummy's secrets, without damaging the mummy.

VOA: standard.2010.05.05

Senior manager Tshepo Ramodibe said the group hopes to use the upcoming football World Cup, being played for the first time on African soil, to broaden awareness of the disease and the way it can be prevented and treated.

VOA: standard.2010.04.23