There have been fundamental changes through time that make the role of the central bank evolve and change through time.
试图保持系统的稳定,随着时间的发展,基本的改变发生,使得中央银行的角色演变。
Now, let me take a sidebar for about five minutes to talk about course administration, the administrivia things that we're going to do in the course, just so you know what the rules are.
现在,让我用大约五分钟的边角料时间,来说说本门课的基本信息,也就是我们需要在课上做的事儿,好让你们了解一下规则。
I hope that makes sense as background, and I'm just going to basically illustrate that basic concept with a few examples throughout the rest of the lecture.
我希望将这些作为背景,在这堂课接下来的时间里,我会用一些例子来说明这些基本的概念
We're going to keep using the things that exist in space, virtual or not, and the things that unfold in time in their relationship with each other as we continue to try to understand these basic principles which shape so much of subsequent literary theory. Thank you.
我们将继续解释事物的存在,无论它们是否可见,我们会学习语言在一段时间里的关系,随着我们继续学习这些基本的概念,我们会进一步理解文学理论,谢谢。
The message I'm trying to get to here, because I'm running you right up against time, is I have to be careful about what's a primitive step.
我想说的事情是,因为我正在跟大家讲算法时间复杂度,我们需要注意一个基本步骤的定义,如果我可以假设。
Let's search to see though now if a million is in this list, or 10 million, whichever way I did this it must be a million, right?
不管我选哪个,数都挺大的对不对?,用嘴基本的方法,噢,花的时间有点长,好,而用二分法呢?
A gig is 10 to the 9, so it does two operations in the length of time it takes light to get from one foot off the table down to the table. That's amazing.
因此光行进一英尺的,时间内电脑可以,进行两次基本运算,这太神奇了。
So we're to assume we can get to any piece of data, any instruction in constant time, and the second assumption we're going to make is that the basic primitive steps take constant time, same amount of time to compute. Again, not completely true, but it's a good model, so arithmetic operations, comparisons, things of that sort, we're all going to assume are basically in that in that particular model.
因此如果我们假设在恒定的时间内,我们可以取得任何一块数据,任何一种数据结构的话,我们要做的第二个假设就是,基本的原始操作计算花费的时间是恒定的,这个假设也不是完全正确的,但这个模型其实挺不错的,因此算法操作,比较,这一类的事情,我们在这个特定的模型中都假设是基本的,操作,花费的时间是恒定相同的。
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