-
"If coal and gas and oil had to pay the price for the damage that they did,we would use a whole lot less of them.
VOA: standard.2010.04.21
-
So, if we use those two tips to try to figure out a structure, a skeletal structure, we would get this structure here if we write out the full Lewis structure.
那么，如果我们用这两个小窍门来,尝试写出它的结构，骨架结构，我们将会得到这样的结构,如果我们把完整的路易斯结构画出来的话。
-
I think with all the media we have available today is definitely good to kind of use that as a tool if you can.
我觉得，如果你会用的话，我们现今可用的媒体绝对是个不错的工具。
-
"And,that is a very worrisome thing. The alternative,however,is even worse, which is,if we do not use them, then we definitely know that we are not going to be getting any assistance out there,"
VOA: standard.2009.08.07
-
And if we use it, we have 2 pounds left.
如果我们装了1号物品，我们就还剩下2磅。
-
"If we are serious about confronting the Islamic Republic of Iran, we have got to use all of the economic and diplomatic tools at our disposal to focus pressure on that country and its leadership to cause them to stop pursuing their plans to become a nuclear power,"
VOA: standard.2009.05.20
-
We use the whiteboards alongside one of the walls, where you just write down your name if you have a question.
用其中一面墙壁旁边的白色书写板，如果有问题，你只要在那里写下你的名字。
-
"The timeline that we've talked about is actually,in a sense that, if I were to use the surge in Iraq, look where we are right now, sort of apply the same kind of timeline to Afghanistan, as best we can tell, and we think that's reasonable, in terms of having the impact, and then being able to thin our forces out and bring them back".
VOA: standard.2009.11.04
-
If, in fact, a gold nucleus was this size here, we would need to use another lecture hall in order to find a place to put this nucleus right here.
那么这个实验就太诡异了，所以我们决定,把距离压缩一下，我们要考虑到这一点。
-
What is the use of any aspect of literature if, as good scientists, we can't analyze it or can't somehow or another account for it?
文学又有什么意义呢？,如果作为科学家的我们，既不能分析也不能解释它？
-
So, I brought up this idea, "What if we could just use SMS? You could send what you're doing. It will go out in real time to all the people who are interested in hearing it. And then, it would be archived on the Web. You could also enter it from the Web and it would be device-agnostic.
所以我提出了这样的想法，如果我们只使用短信息会怎么样？,你可以发送你正在做的事，它会立即,让每个有兴趣听的人都看到，接着，它会在网上存档，你还能再网上读到它,而不需要设备支持。
-
That suggests, now, if you think about this even highly simplified lifecycle, suggests some other ways that we might use kind of modern technologies to engineer new vaccines.
那说明了,如果你,思考下这个高度简化的生命周期,那里隐含着其它一些突破口,即我们可以用某种现代技术,来构建新型疫苗
-
stay there because who knows, there are 20 million other things I might have said, but instead let me give you the opportunity to ask questions that you would like to raise, particularly if you want to ask about how they fought, as long as we have a phalanx here we might as well use it if we need too.
你们先别走,因为,谁知道还有什么呢,我还有一肚子的东西想给你们讲,但最好还是留给你们,一些提问的机会,尤其是关于战斗的问题,讲台上正好有一列方阵可以用来讲解
-
We want to be more--a bit more sophisticated than that, if you will, and use other terms, so we'll talk generally about Beethoven's composition or Beethoven's piece or Beethoven's work or his master work or chef d'oeuvre or however fancy you want to get with it.
我们想用些更精确的词藻,用其他措辞表现,我们一般会说贝多芬的音乐创作,或贝多芬的乐章,贝多芬的乐曲,他的杰作,或名曲,或是任何你想到的花哨词汇称呼它
-
This is very important,which is why I am doing it: "If we want to know how fast a human being can run, then it is no use to average out the speed of a "good sample" of the population; it is far better to collect Olympic gold medal winners and see how well they can do.
这话非常重要，是我作这个研究的原因：,“如果想知道人类最快能跑多快，那从好的样本中测出平均数是“,没用的;,而应该收集田径类奥运冠军的信息,看他们能跑多快。
-
So if you think about it, that is the metaphor we use as we are thinking about the work that we are going to be doing.
你们想想，这个比喻就是用来,描述我们正在思考的,即将要完成的任务。
-
If you are describing a particle with location R, the vector we use typically to locate a particle, R then R is just i times x + j times y, because you all know that's x and that's y.
如果你要描述一个位移为 R 的质点,这个矢量一般用表示质点 R 的位移,R 可表示为 i ? x + j ? y,显然你们都知道这段是 x,那段是 y
-
So if I want to use a string as we'll call it which is a word or phrase generally, they always go between double quotes, David hence the quotes around David, and they are double quotes not single quotes intentionally.
当我们要表示单词啊，词组啊，句子啊等等这样的东西时,就会用到字符串，它们位于双引号之间，也就是这里双引号之间的，是双引号，不是单引号哦。
-
But in terms of SI units, which become much more useful if you're actually trying to use intensity in a problem and cancel out your units, we're just talking about joules per second is what intensity is.
但是用国际单位制，这个变得越来越有用了,如果你实际上在使用强度,来解决问题和约化单位，我们仅仅讨论每秒钟的焦耳,这就是强度。
-
Also, what's the energy per photon of this red laser pointer, and then it's also worth trying a calculation dealing with intensity. So let's also try calculating the numbers of photons that would be emitted by this laser pointer, if, for example, we were to use it for 60 seconds and this were a one milliwatt laser.
同样，红色激光笔的,每个光子能量是多少，这也值得用处理强度的方法计算一下,让我们也计算一下,有多少光子会从这个激光笔射出，举个例子，如果我们使用它持续60秒,这里会有一毫瓦的激光。
-
So we have if, and that is followed by, I'm going to use angle braces here just to indicates something goes in here, some test followed by a colon.
那么我写了if，后面跟着，我这里会用一个角括号,来代表这里有些东西，冒号后面跟着一些测试。
-
It solves a slight bug if we don't use it at all, but more on that in the future when you talk about files and creating files.
它解决了一点缺陷，如果我不用它，但是更多的是在以后当你们讨论,文件和创建文件时。
-
So it turns out that we can, in fact, use the energy levels to predict, and we could if we wanted to do them for all of the different wavelengths of light that we observed, and also all the different wavelengths of light that can be detected, even if we can't observe them.
事实上我们可以用能级预测,而且如果我们想的话，我们可以,对所有观测到的光的波长预测，也可以对所有探测到的光预测,即使我们看不到它们。
-
One way to think about it, if we want to use a classical analogy, which often helps to give us an idea of what's going on, is the spin of an electron, we can picture it rotating on its own axis.
如果我们用一个，经典的比喻来考虑它的话，这经常会帮助我们建立起一些概念，就是我们可以把电子的，自旋想象是它绕着轴自转。
-
We've seen this branching construct in Scratch, we've seen it a moment ago on the slide, and see, we just need else if to use not an else, not just an if but an else if.
我们看到了这个Scratch的分支结构，我们看到刚才在幻灯片中，了解到，我们不需要,用一个else，也不只是用一个if，而是用一个。
-
if you don't want to use that, you can also derive it as we did every time, it should intuitively make sense how we got there. But the exams are pretty short, so we don't want you doing that every time, so we'll save the 2 minutes and give you the equations directly, but it's still important to know how to use them.
吸收的和发射的，如果你不想用公式,你也可以每次都向我们这样推导它,很直观的就能得到结果，但考试时间很短，我们不希望你们每次都推导,所以我们会直告诉你，让你节省2分钟，但知道如何应用它十分重要。
应用推荐