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The first step uses a bit of influenza DNA to get the patient's immune system to begin fighting off the flu, and then the protection is given a "boost" some time later by the second step, which can be either another bit of DNA or a conventional flu vaccine.
VOA: standard.2010.07.21
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I actually wanna bridge a little bit from the first part of your question which is a personal part.
我想先简要回答,你的问题的前半部分,这部分是有关我个人的问题。
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It can be a little bit intimidating at first.
刚开始会有点恐慌。
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The first way is just to turn the crank on the math, and the second way is to do a little bit more imaginative about the process.
第一个方法就是纯数学推导,第二个方法我们将对,这个过程做一些物理图像的想象。
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We did figure it out, and we'll get there, but I want to do a little bit of work first.
我们已经算好了,我会告诉你们的,但我们得先干点事
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For now I want to tell you a little bit about what open course ware is and also share with you some work experience with our first public launch of the site.
现在我想谈谈,什么是开放课程软件,并且与你分享一些,第一次开放这个网站的工作经验。
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The first creation story doesn't really contain puns and wordplays, it's a little bit serious. The second creation story is full of them: there are all sorts of little ironies and puns in the Hebrew.
第一个创世纪故事中很少有双关语和文字游戏，有几分严肃，第二个故事却充满了这些：,希伯来语中有许多反讽和双关。
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So tell me a little bit about yourself, where you came from? How you arrived to be the first Muslim chaplain at Princeton University?
那么告诉我一些关于你自己的事吧，你从哪里来？怎样成为普林斯顿大学,第一个穆斯林教士的呢？
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Let me say a little bit,first of all, about the way scholars have categorized the history of Greece.
首先,我要说一下,关于,学者是如何划分希腊历史的
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But I want to end this first real class with a bit of humility as to what psychologists know and don't know.
最后,作为第一堂教学课的结束,我还是想对心理学家们知道什么,不知道什么,保持一种谦虚的态度
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I alluded to this a little bit in the first class about how humans have evolved to seek out energy because famine was the largest threat is one example of this.
第一节课的时候我提到了,人类是如何演化以便寻找能量,因为饥荒是最大的威胁,这是其中一例
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So that's just a little bit of a check for yourself, and it should make sense because what you're doing is you're calculating the difference between energy levels, so you just need to flip around which you put first to end up with a positive number here, and that's a little bit of a check that you can do what yourself.
所以你们总要确保括号，离得这项是正的，这是你们自己,可以做的检查，这事很有道理的，因为你们做的是计算能量差,所以你需要调整顺序来保证一个正数，这是你们自己可以做的检查。
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Last year for the pieces that do vary year to year a bit, last year's first problem set challenged students to write their first or maybe second or third program using this environment called Scratch.
去年的教材有些地方有略微改动，去年的第一个问题集是让学生,在Scratch环境下,写下自己的第一或第二个或第三个程序。
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In the first half of class, I'm going to tell you a little bit about the class and introduce some of the questions that we will think about over the term if you stay in this course.
在这堂课的前半部分，我将告诉你们一些关于这门课的事,介绍几个如果你选择这门课,就将在这学期里考虑的问题。
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And so the first thing we're going to spend a fair bit of time on is trying to get clear on what's a person?
那么首先我们,需要花一点时间,搞清楚人是什么
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I spoke a bit about the first one yesterday or Monday rather.
我在昨天还是周一的时候,提到过他的第一个定论。
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That's what I want to do for the first few minutes of the lecture here is tell you a little bit about the details of the structure and how molecules fit into this image of DNA that's already very familiar to you.
这是我想要,在这节课最初几分钟告诉你们的,有关DNA结构的一些细节,DNA分子结构与这个卡通模型如此一致,对你们来说很熟悉
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So let me first say a little bit about the story line, and some of the themes at the beginning of Exodus, the first six or seven chapters.
首先再让我大概介绍一下故事，以及在《出埃及记》开篇中的一些主题，开始的六七章。
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Exactly, so ignoring these first two positions which were a bit weird, choosing 2 always gave me 5% more votes than choosing 1, regardless of what the other person chooses.
完全正确,所以忽略前两个立场,因为前两个立场有点古怪,我们选立场2总比1多获得5%的选票,无论对手如何选择
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What I thought I would do is first give you a little bit of sense of some of the opportunities that we as a group have been exploring.
我想我先要做的是给你们,一点感觉，知道我们这个团队,是研究什么的。
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Let me first say a bit about my background.
让我先讲讲我的背景吧。
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Well, one way to understand what's good to eat for you is first to know a little bit about what you're eating, and that's where that daily plate exercise came into play.
要想了解吃什么好,方法之一是,首先了解一下你吃的是什么,在这里日常饮食规则将发挥作用
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As I said, for every subsequent week of the class you'll be doing a concept sheet that will be your interpretation of what's going on, but we're going to do something a little bit different for the first concept sheet that's due next week.
如我所说,在接下来的每个星期,你们都要写一篇观点报告,解读当前课程的内容,不过我希望你们下周能够,做一些不一样的东西
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First, I want to talk a little bit about facial expressions, which are ways in which we communicate our emotions not the only way, but an important way and look, in particular, at the case of smiling because it's kind of interesting.
首先，我要讲一点面部表情，这是我们在情感中的交流方式,不是唯一方式，但是重要的方式,看，特别是，拿微笑为例,这有点有趣。
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And there are lots of solutions that chemists come up with -- there's always new techniques that allow us to do this, and these are just some of the first, and we'll go through them in a little bit of detail here.
的情况下研究或者发现它们,化学家们想出了很多的办法,人们发明新的技术来实现它，这些是最早遇到的一些问题，我们要稍微来,研究下它们的细节。
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