We see that you know from everyone,they say their interest in science begins before the age of eleven.

VOA: special.2010.04.01

So this means we can actually calculate this for any molecule that we've drawn the Lewis structure for, because we actually do need to draw the Lewis structure before we know, for example, how many of each of these we have, or at least go through the rules.

这意味着我们可以将原来画过,路易斯结构的分子的形式电荷计算出来，因为我们其实在画出,路易斯结构之后才能知道，比如，这些量的值是多少，或者至少我们需要经过前面的那些步骤。

麻省理工公开课 - 化学原理课程节选

and because... you know, never before have we seen this level of interconnectedness

这种水平的互联性是我们之前从未想过的，

关于全球化 - SpeakingMax英语口语达人

"They have become something like people we know now, whereas before they were obscure,".

VOA: standard.2009.10.21

And he actually did this in the late 1800's, back before even all of the elements that we know today were discovered, really only about 60% or so, 70% were discovered then that we now know today.

他最终在十九世纪晚期完成了这一壮举，难能可贵的是,虽然我们现在已经发现了所有的元素，但在当时已知的元素只有我们现在知道,百分之六七十，在这种情况下。

麻省理工公开课 - 化学原理课程节选

"Before we not that smart. Now we know what going on, how much they cheat us, how much they want us to be slave for them."

VOA: standard.2010.05.14

Before we start on the trip, I want the children to know where in the world they are and where they've come from.

在我们开始旅行前，我希望孩子们知道,他们在世界的那个位置,他们来自哪里。

麻省理工公开课 - 媒体、教育、市场课程节选

So when we extend our assistance to those countries that are still developing, we have a unique perspective that says we know what you are going through, we have been there before too."

VOA: standard.2009.11.05

We know this. Milton has already indulged this fantasy of coming before something that's already happened. We recognize this desire to anticipate an already existing narrative, from what?

我们知道，弥尔顿先前就有让自己先于,已经发生的事情的渴望，这种参与到,已经发生的事情中的渴望可以从？

耶鲁公开课 - 弥尔顿课程节选

This brought in their writing skills. After we talk about all of them, we will write the numbers down - now this is three and two more - before we even tell them the plus sign, you know,how to join things together."

VOA: standard.2010.08.10

It used to be thought before people were very careful- we know that they do every terrible thing in the world in the Peloponnesian War.

人们谨慎行事之前曾考虑过,我们知道他们在伯罗奔尼撒战争中,做尽了世上的恶事

耶鲁公开课 - 古希腊历史简介课程节选

That's correct. So her answer was, if it was a full parabola, then we know it would've been at the ground before I set my clock to 0.

她说,如果运动轨迹为一条完整的抛物线,那么它在我们所设定的零时刻之前,就已经落地了

耶鲁公开课 - 基础物理课程节选

Well I stated it, but Plato didn't state it in the dialogue, the worry that even if the soul was one of the parts even if the soul is already around before we were born, how do we know it can't come apart.

我说出来了，但柏拉图在对话里并没有说，就是一种担心,即使灵魂是组成我们的一部分,即使灵魂在我们出生前,就已经存在了，我们怎么能知道它不会瓦解呢。

耶鲁公开课 - 死亡课程节选

Notice that once we've deleted the dominated strategies, you know I had said before about four people chose this strategy, and in here, about four people chose this strategy, but in this range 30 through 45, I had lots of people.

注意,一旦我们剔除了劣势策略,我们已知有四人选择了,在45到67之间的数,但是选择30到45的有不少

耶鲁公开课 - 博弈论课程节选

Before, we talked about how do you know what messenger RNA to make, how do you know what RNA to copy from a DNA template?

在之前的课上,我们说到如何判断mRNA的具体序列,如何判断RNA从DNA模板复制了什么

耶鲁公开课 - 生物医学工程探索课程节选

Now we know that Milton was blind probably well before the time he began writing Paradise Lost, and therefore, of course, he was then unable to read.

现在我们知道弥尔顿很可能失明了,这早于他开始写《失乐园》的时间，因此，他不能通过眼睛阅读。

耶鲁公开课 - 弥尔顿课程节选

All right. So let's test what we, in fact, know about the photoelectric effect, and before we do that actually, we're going to calculate what we would predict, so when we do the demo it will be meaningful and we can tell whether we're successful or not.

好的，我们来测试一些，我们实际上懂了,多少光电效应的东西，在我们做测试之前，我们先算一下我们能预知什么，这样我们做的测试会很有意义,并且也知道我们是否成功了。

麻省理工公开课 - 化学原理课程节选

So what we think we know derives chiefly from archeological evidence, which is before writing--mute evidence that has to be interpreted and is very complicated, and is far from secure.

我们目前所认为的史实,主要都是从考古证据中所得,这些无声的证据出现于文字记录之前,因此就需要繁复的考证及解读,这些考证未必可靠

耶鲁公开课 - 古希腊历史简介课程节选

If you look at Greece in this period, I don't know if I've used this term before, but some scholars refer to this general period we're talking about as the Greek renaissance by analogy to the renaissance in Italy.

如果纵观这个时期的希腊,我不知道以前是否用过这个定义,但一些学者,用意大利文艺复兴来比喻这个时期,把它称作希腊的文艺复兴

耶鲁公开课 - 古希腊历史简介课程节选