So I think that's interesting that now they are thinking what they know and they are learning something different.
孩子们现在回想,他们熟悉的事物,同时学习一些新的知识。
I know that you have just graduated. So do you feel happy now?
我知道你刚毕业。那么你现在感到幸福吗?
Now, you know already, or you could review in Chapter 4 that I provided to you, something about how proteins work.
现在你们已经知道,或者读我给你们看的第四章,就能了解蛋白质的工作原理
This will be the definition of the mole as the amount of carbon weighing exactly 12 grams, so I would like to know now how many particles, how many carbons are there in that mole.
摩尔的定义就是,12克的碳的数量,我想知道有多少粒子,一摩尔会有多少碳粒子。
So, many of you are new to the Boston area, now I still realize, and I want to let you know it's not required that you be a Red Sox fan to be at MIT.
你们中很多人新来到波士顿地区,现在我仍认识到,我想让你们知道在麻省理工学院,不一定必须做一个红袜队的球迷。
And so I repeat, and so I repeat and one of the visuals meant to be conveyed by this-- this scale here is now I know that this guy is the smallest.
一次又一次地重复这样的比较,这个天平在此传达的信息是,我知道了这个杯子是最轻的。
Now this is when I want to stop for a second and I know that some of you, from past experience, are somewhat math phobic.
现在我们暂停一下,根据之前的教学经验,我知道有些人有数学恐惧症
Well, I think you must know now how to formulate that question.
我想你们都知道怎么列方程
Now how do I know that?
我怎么知道的呢?
Now, I don't know how far back it goes but it must be that in ancient times some people would say, all right you're going to be doing more work or you're contributing more to this enterprise, we'll give you a bigger share of the profits.
我不知道这能追溯到什么时候,但在古时候肯定有人说,好吧,你比别人干得多,你对公司的贡献更大,我们会把收入的大头给你
You can be relieved of that debt, or now you know you feel bad now, I guess.
你可以释怀了,我想你也许还会有些许歉疚
But if we now introduce some progressive memory, so--a progressive memory loss-- so that I know longer remember what I did 100,000 years earlier.
但是如果引入持续的记忆…,持续的记忆缺失-,我不记得,十万年前做过什么。
Well now I need to be rational, I need to know that other people are rational, and I need to know that other people know that other people are rational.
我自己已经是理性的了,我也知道对手也是理性的,我还需要知道对手们明白,他们的对手也是理性的
Now, if I get over here, HF, I know that fluorine is hogging the electron, so it is not equal sharing. It is over here.
那我们再看到这里,氟化氢,我知道氟在拉电子,所以它就不是平均共价。
Now, I know you've had all this bonding in the orientation period, but I think that it's much better when you write a test for there to be some solid state defects known as vacancies in between the various people.
现在,我知道你们关系很融洽,在互相介绍的时间里,但是我想这样会更好,当你们在一起做一个测试,成为固体化学的不良产品,成为众多人当中的缺位。
Now, banking has a --it's important to know that banking is bigger in developing countries -I'll say LDCs, less developed countries -than in developed countries.
如今,银行有着...大家一定要了解,在发展中国家,银行规模更加庞大,...应该是在LDCS,即欠发达国家,这是相对于发达国家来说的
Now I don't know how impressed you are, the year before that it was 22% in one year.
我不知道给你们是否被震撼到了,前年的收益率是22%
Now we've figured that out, we figured out who the winner is, and I know that all of you have been trying to see if you won, I'm going to leave you in suspense.
现在我们来已经知道谁是赢家了,我知道你们都想知道自己是不是赢家,我留下个悬念
You'll see enough things that will confound you, but right now I want to demonstrate a simple paradigm of what it means to know the present and what it means to say this is what the future behavior will be.
你将会发现很多物理问题会让你困扰,而眼下我会举一个例子来阐述,什么叫了解现在,什么又叫预测未来
I think the truth of the matter has to be-- I think the answer right now is, we don't know how to give that story.
我认为,事实上,目前的答案就是,我们还没法做出那种解释
Now,I don't actually know whether it's true that simple things can't split.
我其实不知道是否简单的东西就不能分裂。
Wouldn't it be nice to be able to go someplace and just for a period think to yourself, "Well, you know, right now I don't have to worry about that.
要是能去那岂不是很好,你能有一段时间对自己说,“你知道,现在我不用担心死亡了。
By "Present," We mean-- we will pick some part of the universe we want to study and we will ask, "What information do I need to know for that system at the initial time, like, right now, in order to be able to predict the future?"
我们所说的"现在",意思是,我们会选取客观世界某一部分来进行研究,然后我们就会问,我们需要什么信息去了解,初始时刻的系统,比如现在,进而能使我们能够预测未来呢
Now, I hope you guys know that much calculus, that when you take a derivative of a function of a function, namely v square over 2 is a function of v, and v itself is a function of t, then the rule for taking the derivative is first take the v derivative of this object, then take the d by dt of t, which is this one.
我希望你们了解更多的微积分知识,当你对复合函数求导时,也就是说v^/2是关于v的函数,而v本身是关于t的函数,求导的法则应该是,第一步是这一部分对v求导,然后v再对t求导,得到这一部分
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