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Usually with just two, maybe three characters, a character that you can't really see as well on the screen, otherwise, so a new line character.
通常需要两到三个字符，这些字符你们在屏幕上是,看不到的，这个是换行字符。
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When you say "it must", this usually does not mean it needs to do something.
当你说“It must”的时候，通常并不表示它需要做某事。
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In Mesopotamia they usually didn't need to because the richness of the soil and so on.
在美索不达米亚,由于土壤肥沃及其他因素,通常是不需要施肥的
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Programmers often write TODO with no space, all caps like this which means "I have to do something here."
程序员通常写TODO不使用空格，像这样的大写意思是“这里我需要做些事情“
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Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.
那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人
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Every risk management device relies on a design and the design is usually complex and has-- it all has to work together.
每种风险管理工具都是基于某种设计,而这种设计通常都是很复杂的,需要各部分相互之间的配合
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So if we start actually pushing ourselves to think about examples-- does it really take one to know one--the answer is, at least as a general claim, it's not true.
所以假如我们开始,深入探讨一些例子,到底需不需要同类才能互知 答案是,至少通常来说,这是不需要的
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And often, if you want to make a lot of it, you have to think about the thermodynamics of the system, how fast the reactions will go and kinetics, and then whether they'll go, the thermodynamics, and sometimes then you need to adjust the reactions, maybe use a transition metal to make it go better.
这种分子就不能正常工作，而且通常来说,如果你要大量生产一个东西,你必须考虑系统的热力学，反应速率和动力学,还有反应是否会发生，热力学，而且有时候你需要调整反应的发生。
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Those changes usually involve enzymes.
这些变化通常需要酶的参与
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I've got and init that says, when you create an instance, here's what you do.
我并不需要一定要有init声明，但是这是，再说一次，通常来说把init声明一开始。
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But for the next week or two when you're writing programs, at least for the first time, generally if you're trying Scratch to debug them like you might have been trying to troubleshoot Scratch, you're probably going to reason - through it by looking through the your code -- -- top to bottom, maybe engage a staff member for help -- but your friend will also be printf.
但是，在接下来的一两周内，当你们写程序的时候，或至少在第一次写的时候，通常如果你在调试程序,就像你们可能已经试着调试过,你们或许是通过查看你们的代码,来推断你们的程序-,从头到尾，可能还需要别人的帮忙-,但是你的朋友也将要打印输出。
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Some notion of being above yourself and thinking yourself more than a man with the implication that you are approaching some kind of divinity by being more than a man, and acting accordingly,which usually requires that you use violence to achieve what you want.
某种超越自我的信念,认为自己不只是凡人,这就暗示了,你正接近某种神灵,为此,通常需要使用暴力,来达成所愿
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So really, the rule of thumb if you think back to Scratch is -- that any time you write a statement -- -- something that does something in one line of code -- you generally need the semicolon there.
实际上，根据经验，你们回忆一下在Scratch中,任何时候你们写一条语句-,处理一些操作的一行代码-,你们通常需要在那里加个分号。
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And just as with variables, you should use some common sense, some style here, and the function's name should X Y communicate what it does, calling it X or Y or Z is generally not all that helpful.
就像变量，你使用一些常识，一些类型，和函数名需要,传达它所做的事情，把它叫做,或者Z通常是没有什么用处的。
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It's a little more involved on a PC but it's all free, the software you can download, and Linux in similar operating systems generally come with a compiler or you run a simple command to get it.
在PC机上有点复杂，但是它是免费的，你一般下载的软件，类似Linux的操作系统等等通常都需要,一个编译器，或者你可以运行一些简单的指令来获取。
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So this line or these lines of code up here are arguably constant time steps to say if N is less than 2 in return, that it will always take maybe one step, maybe two steps, some number of fixed CPU cycles.
如果N小于2并返回,那么这些行所对应的代码,通常只需要执行一步，或者两步，具体数字与CPU周期有关。
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Now that's changing the more years that pass the more of you have 64-bit computers and the more servers have many, many gigabytes of RAM and so you need actually 64-bits, but for now let's assume a common system whereby a pointer just by definition of the homework is 32 bits.
现在计算机也在改变，也有更多的人,使用64位的计算机，更多的服务器有很多，很多G的内存，那样你就需要64位的，现在我们假设通常的系统中,根据家庭作业所定义的，一个指针为32位。
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I can't give it what it wants," know that when you're writing code and the problems that will remind of this, if you absolutely have to kill your program, you don't have to close the window, CTRL+C reboot crazy stuff like that, generally you can hit CTRL+C and it will just abort the program right where it is, in case you ever get trapped in some awkward situation.
我不能给它所要的“,当你在写代码时，程序将,提醒这个问题，如果你不得不,关闭这个程序，你不需要关闭这个窗口，重启像那样的疯狂举动，通常你可以敲,它将会在这个地方终止那个程序，假使你陷入了尴尬的处境。
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Last year it was taught by Rafael Romeu, because John, Geanakoplos who usually teaches the course, was on leave and so we had to find someone else.
去年是由拉斐尔·罗梅乌执掌教鞭,因为通常教这门课的,约翰·吉纳科普洛斯请假了,所以我们需要聘请了另一名教授
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