"Half the time I wander around looking for something I can't remember what it is.
VOA: special.2009.09.15
What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.
在这之前是很整洁的,之前最主要的用于空调或者冰箱的,物质是氨。
He brings it up as if we know that this is what he's been talking about all the time.
他提出这个好像我们知道一样,这是他一直在说的东西。
A navigator needs to know what time it is on his ship and also the time at another place of known longitude -- at the very same moment.
VOA: special.2010.07.14
What is it the Israelites were saying in their day and in their time and against whom and for what?"
当时的犹太人在生活中都说些什么?”,“反驳谁?为什么?”
A navigator can know the latitude of his ship by observing the location of stars, where the sun rises in the morning and sets in the evening, and what time of year it is.
VOA: special.2010.07.14
As we might put it somewhat misleadingly, what is it for "two" people to really be the same single extended-through-time person?
对于“两个“人、,如何才是同一个贯穿时间的人,可能有一些误导的观点?
"It is time to do what is right, not for the next election, but for the middle class."
VOA: standard.2010.07.19
What's shown in this diagram is the progress of the developing embryo as it travels in time, down the fallopian tube.
这张图上显示的,就是胚胎发育的过程,是按照它在输卵管中移动的时间排序的
"There will be operation in this area. But it is now a matter of military judgment (of) what is the appropriate time."
VOA: standard.2009.10.12
So what I'm saying now is it took a long time for this to solidify. And one of the things we think made it solidify was the development of codices,a codex.
所以这花了很长一段时间,才得以统一,我们觉得,使它统一的是抄本的出现。
"The bottom line: it is now time for our fiscal authorities to do what fiscal authorities are paid to do, why they were elected to Congress: bring about some balance.
VOA: standard.2010.04.21
So, for example, if we're to hold the time constant, this makes it a lot simpler of an equation, because what we can end up doing is actually crossing out this whole term here.
比如说,如果我们把时间,定为常数,这使得方程,大大简化,因为我们可以把,这一项划掉。
"It is time for Democrats to put away the political playbook and simply say publicly what they are suggesting privately: that this bill still needs some work, that both parties should come together to do that work on behalf of the American people."
VOA: standard.2010.04.24
Conversely, if I knew the velocity of this object, I also know what time it is, provided I knew the initial velocity.
反过来,如果我知道了这个物体的速度,我也同样可以知道时间,只要初速度是已知的
"What I would like for the country and everybody to know is that with the age of the computer, it takes time for us to try to keep up with the computer but if some people would start writing again, and sending their bills by mail, maybe it could ease a little of the burden as far as the financial difficulties that we are in."
VOA: standard.2010.04.13
It's not so much what's in the proposal as it is that this is the time for reconsideration.
这个计划的内容并不复杂,而如今正是一个反思的好时候。
The loop invariant what does the loop invariant mean? It says, here is a property that is true of this structure every time through the loop.
循环不变量是什么意思?,它是一个在结构体中,每次循环都为真的属性。
We assume that unless we're dealing with Scheherazade, it has to have an end, but at the same time we might well ask ourselves, why does it have a middle? What is the function of the middle with respect to a beginning and an end?
而且我们认定一定会有结尾,除非讲故事的是那个,《天方夜谭》中的苏丹新娘,但是我们要问自己了,为什么故事一定要有经过呢?,故事的经过对于开头结尾来说起到什么作用呢?
He's playing with Freudian slips. Of course, what he's thinking about all the time is the master-slave game, and so here it comes out, when he's talking about his brother's diving: "He's a master diver. You really have to slave away at it."
他在开Freudian滑倒的玩笑,当然,他一直想的是,主人-奴隶的游戏,当谈到他兄弟的潜水时,他提到了:,“他是个跳水能手,你真得埋头苦干拼命练习这个了“
What that means is, if you know the velocity of the given time and you know the initial velocity, you know what time it is.
这个方程的意义是,如果你知道某个给定时刻的速度,并且知道初速度,你就能知道运动的时间
What we've got to turn to next time, then, is the question, what else might it be? Okay.
下次我们要探讨的问题是,还会是什么?,下课。
The rest of today and some of next time talking about the question of, ? well, what is it for a life to go well?
今天讲座的剩余时间和下次讲座,探讨一下,怎样才是好的人生?
I just doubled the indentation each time so you can see it. So each successive call, notice what's happening. The argument is getting reduced. And we're going another level in. When we get down to this point, we're calling it with just a string of length one.
因此每次成功调用注意它的过程,我们的命题不断简化,而且我们不断深入嵌套,当我们走到这一步的时候,我们就是在调用它处理,仅有一个元素的字符串了。
Yeah. Log. It's a good think, but why do you think it's log? Ah-ha. It's not a bad instinct, the length is getting shorter each time, but what's one of the characteristics of a log algorithm? It drops in half each time.
对了,对数,这是个好想法,但是你们为什么认为是对数呢?,啊哈,这样的本能不错,每次长度都会缩小些,但是对数算法的特性是什么。
A clock tells you what time it is, but you can also say what time it is by seeing how fast the particle is moving because you know it started with some speed.
时钟能告诉你现在的时间,但你也可以通过测量质点速度,来判断当前的时间,因为你知道它的初速度
Now, it's also the case that this is fundamentally what class this algorithm falls into, it is going to take exponential amount of time.
哪个种类的一个实例,这个问题的时间复杂度是指数级的,也就是当n上升的时候。
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