I want to show you how easy it is to change the code. But, notice, once I've added this I actually have a problem. This is now an under-constrained problem. I have more unknowns than I have equations.

我加上这个条件后,我马上面临一个问题了,这就是现在是一个非约束性问题了,我的未知数比方程数多,你从代数中可以知道。

麻省理工公开课 - 计算机科学及编程导论课程节选

.. Now, once you have more than three-- more than two assets-- it might be possible to get points inside the frontier.

现在，一旦你有超过三种-,超过两种资产-,就有可能取到边界里面的点。

耶鲁公开课 - 金融市场课程节选

There we go. Now if I do this, an infinite number of times, we should get roughly 50/50, but now we have the ability to do things only once in awhile.

开始，如果我们，不停地按这个按钮，我们大致会有一半的机会听到猫叫，但是我们每次只有一次按按钮的机会。

哈佛公开课 - 计算机科学课程节选

Now once again, there is this sort of the skepticism about skepticism.

又一次，我们有了对怀疑主义的怀疑。

耶鲁公开课 - 文学理论导论课程节选

What the Dutch did--the Netherlands is an extraordinarily small country, and it's the most populated country in Europe, then, per square kilometre, and is now--once.

那些荷兰人...荷兰是一个,非常非常小的国家,也是当时欧洲人口密度最高的国家,如果以每平方公里人口计算,现在也是

耶鲁公开课 - 欧洲文明课程节选

Now, once you start thinking these thoughts, there's no need to restrict yourself to emotions.

当你开始萌生这些想法时,你会发现,不止情绪如此

耶鲁公开课 - 死亡课程节选

It is now passing away as it once came into being.

它曾经诞生，现在也会消逝。

耶鲁公开课 - 现代诗歌课程节选

Now, once we've got that, we can start doing things.

好，我们可以开始做了。

麻省理工公开课 - 计算机科学及编程导论课程节选

I should say it once, that this is now a very controversial subject.

我应该说说以前的时候,这在现在来讲是颇具争议的话题

耶鲁公开课 - 古希腊历史简介课程节选

Let's just suppose that that game's just been played once for now.

假设我们正在进行这个博弈

耶鲁公开课 - 博弈论课程节选

Now, how powerful-- was the cotton boom once it took hold?

棉花产业,是怎么让南方发家致富的呢

耶鲁公开课 - 美国内战与重建课程节选

Now we worked through this just a little bit once before.

那我们比以前在深入一点

耶鲁公开课 - 聆听音乐课程节选

And,that where someone once said that Gaul was divided into three parts, now what happens is people living in any region in France, the three parts that they see are the Ministry of Justice, the Ministry of War, and the Ministry of the Interior.

据说高卢民族被分成了三个部分,现在,这些住在法国的人怎么了,他们眼中的三个部分是司法部,军务部,还有内务部

耶鲁公开课 - 1871年后的法国课程节选

So if we're comparing the difference between these 2 now, what you'll notice is that in nitrogen we have all half-filled 2 p orbitals, and now, once we move into oxygen, we actually have to add 1 more electron into 1 of the 2 p orbitals.

那么如果我们来比较下它们两个有什么不同，你会发现氮的，2，p，轨道,都是半满的，现在，我们继续看一下氧，我们不得不在其中一个，2，p，轨道上,再放上一个电子。

麻省理工公开课 - 化学原理课程节选

Now on the next screen, once this thing resumes, realize that-- come on.

下面我们看下一个画面，注意啦，一旦启动，好好地去感受一下。

哈佛公开课 - 计算机科学课程节选

Now once again you--you're out here in front.

你又一次的走在了大家前面

耶鲁公开课 - 聆听音乐课程节选

Now look, I was an undergraduate once.

但你看，我以前也曾是本科生。

耶鲁公开课 - 死亡课程节选