If the so called "double dip" scenario happens,in which the economy starts to shrink again, Baily says it would make a strong case for a second stimulus something the Obama administration hopes will not be necessary.

VOA: standard.2009.12.20

So the double quote says here comes the input.

双引号代表在这里填上想要输入的东西。

哈佛公开课 - 计算机科学课程节选

98 And so the double bond is 498.

双键是。

麻省理工公开课 - 固态化学导论课程节选

So supposed that the list is not of size 8, let's make it slightly more interesting and double it.

假如列表的大小不是，为了更有趣，使其加倍。

哈佛公开课 - 计算机科学课程节选

And this is the same periodic table that you're going to get in your exams, so it's good to practice doing your problem-sets with that periodic table so you're not relying on having the double check right there of seeing what the electron configuration is.

这也是你们考试时会用到的相同的表,这样你们就不会，所以使用周期表来做问题集,是很好的练习,这样你们就,不会依赖于再次确认,电子构型是什么了。

麻省理工公开课 - 化学原理课程节选

If it goes on for ten years that means that the -it'll double in seven years, so it'd be going up like two and a half fold.

如果按照此速度过上十年就意味着,七年内价格将会翻倍,所以价格应该会上涨到两倍半

耶鲁公开课 - 金融市场课程节选

The moderate right wing votes she's going to split with Claire Elise, and jean's going to have all the left wing votes, extreme and moderate, and so from Stacy's point of view this is a double bad.

温和的右派选票会被她,和克莱尔·伊莉斯分享,吉恩将会获得所有的左派选票,极端的和温和的,因此从斯泰西的角度看这是加倍的差

耶鲁公开课 - 博弈论课程节选

So control of these international highways brought a great deal of wealth to the area, but the central location was a double-edged sword, because in times of peace it would bring prosperity, but, of course, in times of war the land was perpetually invaded as armies would crisscross the land going off to do battle with the great powers.

对这些国际要道的控制,给这个地区带来了大量的财富，但这处于中心的地理位置也如同一把双刃剑，因为在和平时期它带来繁荣，但，在战乱时期，这块土地常常被侵略,当军队在此刀刃相交,或者经过与强国征战。

耶鲁公开课 - 旧约导论课程节选

All right. So you probably read in the book that the bassoon is a double reed instrument, and so just to show you what that looks like-- You've probably seen it but if you haven't, two pieces of wood vibrate together when I blow through them.

好的,你们可能在书上看到过,巴松管是个双簧乐器,我将为你们演示双簧怎样演奏,你们可能见过,如果没有请看我演示,我吹奏时,两个木片会一起震动

耶鲁公开课 - 聆听音乐课程节选

So eight months after the stock market crashed, ve not hit the double digits in unemployment.

也就是说股票市场崩溃的八个月中，失业率都没有达到两位数，we’

斯坦福公开课 - 经济学课程节选

So in order to rotate a double bond, you have to actually break the pi bond, so essentially what you're doing is breaking the double bond.

为了能够旋转双键，你必须打破一个π键，本质上我们要做的就是打破双键。

麻省理工公开课 - 化学原理课程节选

At this point, we have no other choice but to double up before going to the next energy level, 2px so we'll put a second one in the 2 p x.

在这点上我们没有其他选择,而只有双倍填充,在到下一个能级之前，所以我们放入第二个电子至。

麻省理工公开课 - 化学原理课程节选

So, if we talked about a nitrogen-nitrogen single versus double versus triple bond, the triple bond will be the shortest and it will be the strongest.

因此，如果我们讨论的是氮与氮之间的单键,双键与三键，那么三键应该是其中最短的一个，同时也是最强的一个。

麻省理工公开课 - 化学原理课程节选

So it's very important that the double bond locks it in a particular conformation.

所以双键把它们锁定在某一特定形状,是十分重要的。

麻省理工公开课 - 化学原理课程节选

And now we get the p orbitals, remember we want to fill up 1 orbital at a time before we double up, so we'll put one in the 2 p x, then one in the 2 p z, and then one in the 2 p y.

我们到了p轨道，记住在双倍填充之前,我们想要每次填充至一个轨道，所以我们在2px填充一个然后2pz填充一个，然后2py填充一个。

麻省理工公开课 - 化学原理课程节选

So that's two of our types of bonds in benzene, and we have one type left, that's going to actually be the double bond or the pi bond that So we can have one bond here between this carbon's p orbital and this carbon's p orbital.

这就是苯环里的两种键，我们还剩一种，那就是这些p轨道之间，形成的双键或者π键,我们可以在这个碳的p轨道,和这个碳的p轨道之间有个键。

麻省理工公开课 - 化学原理课程节选