Well,experts say the expression appears to have been first used in the United States more than one hundred years ago.

VOA: special.2010.01.17

So let me first say a little bit about the story line, and some of the themes at the beginning of Exodus, the first six or seven chapters.

首先再让我大概介绍一下故事，以及在《出埃及记》开篇中的一些主题，开始的六七章。

耶鲁公开课 - 旧约导论课程节选

Let me first say a bit about my background.

让我先讲讲我的背景吧。

麻省理工公开课 - 媒体、教育、市场课程节选

Many years later, Wiley Post would say that first airplane was the most wonderful thing he had ever seen.

VOA: special.2009.03.18

Soon we'll know. First of all, we'd better say, as is already clear from what we've been quoting, language is not quite Saussurian.

我们很快就会知道，首先，从引文中很容易看出，语言不是索绪尔式的。

耶鲁公开课 - 文学理论导论课程节选

Other experts say glass making first started four to five thousand years ago in ancient Mesopotamia, present day Iraq and Syria.

VOA: special.2009.09.16

It still seems wrong in a way that it doesn't seem wrong in the first case to turn, you say.

反正就是不对,而在第一种情况，这样做就是对的，是吧。

耶鲁公开课 - 公正课程节选

Dentists say children should have their first dental visit at least by the time they are one year old.

VOA: special.2009.03.11

I was going to say when you first start doing this, even people who have been doing it for a long time still go off on ten-minute daydreams before realizing that their minds were wondering.

我本想说第一次尝试时，但即便是修行多年的人,也会走神十分钟之久,方才意识到自己刚做了白日梦。

普林斯顿公开课 - 人性课程节选

Team members say the new car is the first and only one that gives the blind person complete control of the vehicle.

VOA: special.2009.11.03

I'm thinking about a problem, I'm going to show you an example in a second, first thing I'm going to do is say, what is the thing that's going to change every time I run through the same set of code?

我要解决一个问题，我马上会让大家看一个例子，第一件我要做的事情就是,弄明白每次运行同样的指令集时,每次都会改变的东西是什么？

麻省理工公开课 - 计算机科学及编程导论课程节选

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

This is the first time we have in Christianity someone attempting to say,"This is the authoritative list.

这是基督教里面第一次有人说,“这些是权威书目。

耶鲁公开课 - 新约课程节选

President Richard Nixon used to say that the first civil right of every American "is the right to be free from domestic violence."

VOA: special.2009.02.28

The first thing they are supposed to say is good morning or good afternoon, and then they say, what are your questions?

他们应该说的第一件事就是,早上好或下午好，然后会问，你的问题是什么呢？

麻省理工公开课 - 固态化学导论课程节选

LOU COSTELLO: "What I want to find out." BUD ABBOTT: "I say Who's on first, What's on second, I Don't Know's on third."

VOA: special.2009.03.09

You have to be comfy on camera but this is your first chance to say hello to mom and dad on camera.

在镜头前表现得自然点儿,因为这是你第一次在电视上跟爸妈打招呼。

哈佛公开课 - 计算机科学课程节选

Still,medical experts say people should not take aspirin for disease prevention without first talking to a doctor.

VOA: special.2009.10.20

Whenever you hear the term ionization energy, make sure you keep in mind that unless we say otherwise, we're talking about that first ionization energy.

但无论什么时候你听到电离能这个词，一定要记得，除非特别说明，我们都是在说第一电离能。

麻省理工公开课 - 化学原理课程节选

They say babies should be examined when their first teeth appear -- usually at around six months.

VOA: special.2009.03.11

We spent the first half of the semester,you might say, trying to get clear about the metaphysical facts.

我们将前半学期花在，试着弄清楚那些形而上学的事实。

耶鲁公开课 - 死亡课程节选

Historians say the Italian scientist and mathematician may not have been the first to get a good look at the moon and planets.

VOA: special.2009.10.27

Let me say a little bit,first of all, about the way scholars have categorized the history of Greece.

首先,我要说一下,关于,学者是如何划分希腊历史的

耶鲁公开课 - 古希腊历史简介课程节选

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

VOA: special.2011.01.05

Here,the first level: do we focus on weaknesses, which is the disease model,say let's get rid of weaknesses?

第一个层次：,我们是否重视缺点，也就是疾病模型所说的我们要摆脱的缺点？

哈佛公开课 - 幸福课课程节选

Historians say the first paper published by blacks in the United States was Freedom's Journal.

VOA: special.2009.04.20

When Milton instructs his muse, "Say first, for Heav'n hides nothing from thy view," there's something more here than the primary sense of the word, which is just "first in sequence."

弥尔顿写到缪斯的时候，“请先说，天界和地狱深渊在您的眼中，一切都了如指掌“,这句中“先“除了它本身的意思“最先“之外，还有其他的含义“

耶鲁公开课 - 弥尔顿课程节选

Some people might even say Abijah Long was the first real explorer of Carlsbad Cavern.

VOA: special.2009.12.07

Maybe one could even say Machiavelli's prince is, in a way, the first truly self-made man.

也还更能说,马奇亚维利的君王是，从某一层面看来，第一位真正白手起家的君子。

耶鲁公开课 - 政治哲学导论课程节选

If you toss a coin twice and the first experiment doesn't influence the second, we say they're independent and there's no relation between the two.

如果你抛两次硬币,第一次的结果并不影响第二次的结果,所以我们说他们是相互独立的,这两次试验没有关系

耶鲁公开课 - 金融市场课程节选