So when I expand this gas adiabatically and it cools down, why do you think it might cool down?

现在我们知道了气体绝热膨胀时,温度会下载，为什么会降温？

麻省理工公开课 - 热力学与动力学课程节选

But it was there for over a thousand years, and we now know things to be a little different.

但是，它存在了超过1000年，我们现在知道的事情有点不一样。

麻省理工公开课 - 固态化学导论课程节选

So, we know now that we have charged particles. Are these negatively or positively charged based on this evidence?

弯曲的角度,现在我们知道,阴极射线是带电粒子,但从这个实验？

麻省理工公开课 - 化学原理课程节选

Now, you know with constant volume, H now it's not going to be delta H that's U straightforward to measure, it's going to be dealt u, all right.

好，现在你们知道在体积恒定的条件下，我们得到的不是Δ,我们直接测量到的是Δ,好，但这基本上也是一样的。

麻省理工公开课 - 热力学与动力学课程节选

Whereas we all know that the universe is of a certain kind-- -- we can't even call it Copernican anymore-- poetry has this odd preference for Ptolemaic astronomy.

虽然我们都知道宇宙是怎样的-,现在即使哥白尼的理论也不完全正确了-,但是诗歌偏爱托勒密的宇宙观。

耶鲁公开课 - 文学理论导论课程节选

We know now that it's caused by a related virus, called vaccinia, remember the virus that causes smallpox is called variola.

我们现在知道这病由一种相关的病毒引起,这种病毒叫牛痘病毒,想想天花病毒也被叫做牛痘病毒

耶鲁公开课 - 生物医学工程探索课程节选

We know now with the same spring, by this comparison, we will find all objects now can be attributed a mass.

我们现在知道利用相同的弹簧,采用这种比较的方法,就会发现,所有物体都有确定的质量

耶鲁公开课 - 基础物理课程节选

Now I don't know what the locations are so let's just arbitrarily come up with some memory addresses.

现在我不知道那个地址是什么,让我们任意的采用一些地址。

哈佛公开课 - 计算机科学课程节选

Mr. Carl Icahn: Alright, you have patience now it's a year later and we'll see what happens now.

伊坎先生：嗯，你得有耐心,那件事情发生了一年了，我们都知道现在的情况。

耶鲁公开课 - 金融市场课程节选

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

So we know how prices are set, they're set by the firms, so the next question is where do the quantities come from?

现在我们知道了价格是怎么决定的,它们是由公司决定的,下一个问题是产量怎样得到

耶鲁公开课 - 博弈论课程节选

According to these prose accounts now Pharaoh's army was literally drowned in water.

通过这段白话诗的描述,我们知道，现在法老的军队确实被淹没在水中。

耶鲁公开课 - 旧约导论课程节选

because all we konw now it's orange alert, the alert level has gone up or gone down We don't really know what it goes on behind the scene.

我们都知道现在是橙色警报，警戒线时高时低,我们真的不知道,事情背后是如何处理的。

普林斯顿公开课 - 国际座谈会课程节选

Now, we mentioned how important the poems are.

现在,我们知道了诗歌的重要性

耶鲁公开课 - 古希腊历史简介课程节选

It's too early to tell what the impact on learning will be from open course ware but we know from messages people have sent us that educators see tremendous value in being able to use the site to build work upon others.

现在还不好说,但是通过人们发来的邮件我们知道了,教育者对于能够在别人的基础上,展开自己的工作给予很高赞扬,他们现在可以节约下时间。

麻省理工公开课 - 媒体、教育、市场课程节选

So a good bit of what we know about diet and health now comes from studies like The Nurses' Health Study, and in the past, from studies like The Framingham Study and The Seven Country Study.

我们现在知道的关于饮食与健康的知识,相当大一部分来自于像,护士健康研究这样的调查,而在过去则是来自像弗明汉研究和,七国研究这样的项目

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now we've known that.

现在我们都知道这个道理了。

哈佛公开课 - 幸福课课程节选

OK, so now the question is, how do we know the first place that this is a suitable reductant?

好的，现在的问题是，我们如何能知道第一步中,镁是一个合适的还原剂？

麻省理工公开课 - 固态化学导论课程节选

We don't pay attention to them when they are going beyond three, but now we know we need that.

我们以前并没关注他们,对三维以上空间的研究,但是现在我们知道也需要关注那些东西

耶鲁公开课 - 基础物理课程节选

Today we know, for example, if you can put one certain kind of element in your mouth or eat that, it doesn't necessarily mean you want to put the element next to it and your mouth as well, that might not be safe.

现在我们知道了，比如，即使你能把某一种元素放进嘴里,或者吃下去，这也并不一定意味着,你会把它邻近的元素也吃进嘴里,这可能会有危险，但。

麻省理工公开课 - 化学原理课程节选

The beauty of that is now we have discovered a notion of what it means to multiply a vector by a number.

现在最美妙的就是我们就已经知道,数字乘以矢量的意义

耶鲁公开课 - 基础物理课程节选

So now we know the Avogadro number and are able to count the quantities accordingly.

所以现在，我们知道阿伏伽德罗数,并且能够以此计算出数值。

麻省理工公开课 - 固态化学导论课程节选

We now know, and I'm going to talk about next time, lots of ways to do this, alternatives to this method of bioengineering.

我下节课会讲,我们现在知道,有很多方法能做到这一点,并能替代上述生物医学工程方法

耶鲁公开课 - 生物医学工程探索课程节选

Now we want to find out what this guy is here.

现在我们想知道这项是什么。

麻省理工公开课 - 热力学与动力学课程节选

We now know what happened because of the surveillance investigation.

我们现在知道发生了些什么,经过监督调查后

耶鲁公开课 - 金融市场课程节选

Its composition is influenced and determined by literary conventions and goals. Now, of course we all know that there is no such thing as purely objective history anyway. We have no direct access to past events.

它的形成是受文学的惯例和目的影响和决定的,当然现在我们都知道了没有什么是纯客观的历史,我们没有直接通向过去事件的途径。

耶鲁公开课 - 旧约导论课程节选

So this is just Firm 1's profit.

现在我们只知道公司1的利润

耶鲁公开课 - 博弈论课程节选

All right. Now the hermeneutic circle, then, involves this reference back and forth between the entities that I've been trying to describe.

好，现在我们知道解释学循环，包括在我刚刚所说的,存在之间的穿梭。

耶鲁公开课 - 文学理论导论课程节选

Now let's say that we're into polymers. We know what plastic is.

现在假设我们知道聚合物，我们就知道塑料是什么。

耶鲁公开课 - 文学理论导论课程节选

So platina is like a diminutive of silver, but we now know that platinum is far superior to silver It is far more noble. It has a higher melting point, a higher chemical inertness, a fantastic metal.

所以普拉塔就像一个小小的银，但我们现在知道普拉塔比银要好很多,更为珍贵，熔点更高，化学惰性更高，是一种非常不可思议的金属。

麻省理工公开课 - 固态化学导论课程节选