That expression comes from the days when people slept on beds filled with dried grass or hay.

VOA: special.2009.09.20

Right, having done that, we can certainly get to more complicated things, so for example, suppose I look at that expression.

好，说完了这一点，我们就可以讲些复杂些的话题了，例如，假设我看到了这个表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

In the backdrop, in the background, of that expression, "struggle for science," there are two key figures.

为科学而斗争，这个表达的背景中“,有两个关键的人物。

耶鲁公开课 - 文学理论导论课程节选

Newspaper reports about a banking crisis in Russia used that expression.

VOA: special.2009.04.26

When I try and evaluate that expression of greater than, is going to go into the class to say greater than is a comp method.

这个大于的操作符的时候,是到类的定义里去识别，大于是一个比较的方法,那么让我在这里说仔细一点吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

But there is an expression to get cold feet that has nothing to do with cold or your feet.

VOA: special.2009.12.13

When we see that, when we look on the web, we see that expression of both a hope for something better that the web seems to represent for them and we see that sense of furious anxiety about what school classroom actually means to these kids.

当我们认真看那些网站的时候，我们看到了这样一种表达,希望更好的生活,仿佛只有网络能够提供给他们,同时我们还看到了那种狂躁不安,困惑于到底学校的课堂对这些孩子们意味什么。

麻省理工公开课 - 媒体、教育、市场课程节选

The expression meant that the person who cannot hold a candle to you is not fit even to be your servant.

VOA: special.2011.05.29

And here, too, it's just a little baby program in that I'm hardcoding the expression 17 divided by 13.

然后这里，这只是一个子程序,在那里面我硬编码了表达式“17除以13“

哈佛公开课 - 计算机科学课程节选

The expression "fireworks" gets its meaning from the fireworks that people shoot into the sky when they are celebrating a great event.

VOA: special.2009.07.05

But you can write it down It's a concept that links itself to a literary or verbal written expression.

但是你们可以将负二的平方用笔写下来,那是种概念，能将其自身,与文学或文字书面的表达连接起来。

麻省理工公开课 - 电影哲学课程节选

The expression probably began because the jungle is filled with wild animals and unknown dangers that threaten people.

VOA: special.2010.05.16

They misattribute that, what might be anger, what might even be aggression and violence, to an expression of love.

他们错误地把，可能的愤怒，侵犯或暴力，解释为爱。

耶鲁公开课 - 心理学导论课程节选

Charles Haynes is a senior scholar at the First Amendment Center, a group that studies free expression issues.

VOA: special.2009.12.24

But we get tired of saying that long expression, so we're going to call that a Newton, right?

但我们不想说得这么复杂,所以把这个单位称为"牛顿",对吧

耶鲁公开课 - 基础物理课程节选

The expression fireworks gets its meaning from the fireworks that people shoot into the sky when they are celebrating a great event.

VOA: special.2010.07.04

In this book, what I wanna just hit home here, especially for those if you are watching this, is that spiritual life and religious expression is not something that you do once and then you're done.

这本书，我想重申它的精彩之处，观众们，在于告诉你们，精神生活和宗教表达,并不是一次就,可以完成的事儿。

普林斯顿公开课 - 人性课程节选

So it is not surprising that top is part of another expression that describes an important person.

VOA: special.2009.11.29

For Singapore...Sorry, I'm sorry... No, no..it's just like the... ? How does that American expression go?

对于新加坡来说。。。对不起。,不，不，我想问。,美国是怎么宣称的？

普林斯顿公开课 - 国际座谈会课程节选

It cannot be changed. The expression comes from the idea that water that has fallen over a dam cannot be brought back again.

VOA: special.2009.05.10

So the result is we can combine all of these as a single differential, and just like we've seen before, what that suggests is that we define another new quantity given by this expression.

结果就是我们能把所有的结果,整理成一个单一的微分，就像我们前面看到的一样，这说明我们可以利用这个式子,定义一个新的物理量。

麻省理工公开课 - 热力学与动力学课程节选

The "six" in the expression comes from the six feet that make up a fathom which is a little less than two meters.

VOA: special.2009.05.24

OK, he also, let me see, he also, lastly, to close us out, he also developed an analytical expression for the energy of that covalent bond, which is really what we want.

好的，他也，让我看看，他也，最终接近我们的，他也发明了一种分析方式,对于共价键能量来说，这是我们真正想要的。

麻省理工公开课 - 固态化学导论课程节选

There was a sweetness and softness in the woman's expression that I had never seen before.

VOA: special.2009.07.04

This tends to be an awkward expression or term that is used by historians.

这个表达并不准确,但是仍被历史学家使用

耶鲁公开课 - 欧洲文明课程节选

To keep your head above water is a colorful expression that means staying out of debt.

VOA: special.2009.05.10

It's difficult to imagine that as an expression of genuine grief over the death of a genuinely close friend would take the form of a poem so learned, so filled with remote literary allusions and obscure opinions.

这首诗是为表达对挚友逝去的真挚悲痛,却采取了这样一种如此博学，如此充满,遥远的幻境和隐晦的观点的形式,这确实是难以想象的。

耶鲁公开课 - 弥尔顿课程节选

The "six" in the expression comes from the six feet that make up a fathom -- which is a little less than two meters.

VOA: special.2011.03.06

And again even today the expression " "Athenian democracy" connotes an ideal of the most complete form of democratic government that has ever existed.

它是座民主之城，时至今日,“雅典式的民主,仍意味着有史以来,最理想的完整民主政府型态。

耶鲁公开课 - 政治哲学导论课程节选

They do that because they can control the expression of genes.

它们能正确地合成蛋白,是因为它们可以调控基因的表达

耶鲁公开课 - 生物医学工程探索课程节选