The father is an efficiency expert, an expert in doing things better and faster.

VOA: special.2009.05.04

Now, we concluded last week at looking at sorts and efficiency, some new notation called asymptotic notation and we'll continue that story today.

上周我们着眼于排序和效率问题，并提出一些渐近线的新符号,今天我们将继续讨论相关内容。

哈佛公开课 - 计算机科学课程节选

and how that relates to the efficiency of the market.

还有这个与市场效率有什么关系。

有趣的研究课题 - SpeakingMax英语口语达人

He said Russia will none-the-less continue to push for domestic energy efficiency and cuts in carbon emissions.

VOA: standard.2009.12.25

And in practical terms, we can define the efficiency as the ratio of the heat in to the work out.

在实际中，我们定义,效率为热与功的比值。

麻省理工公开课 - 热力学与动力学课程节选

He talked with one group about creating jobs by promoting energy efficiency and so-called clean energy.

VOA: standard.2009.12.04

I want to talk about efficiency, and we're going to, or at least I'm going to, at times also refer to this as orders of growth, for reasons that you'll see over the next few minutes.

为什么是很有价值的，我想要讨论下效率，我们将会，或者至少我将会不时的，提到有序的增长,原因你们很快就会明白的。

麻省理工公开课 - 计算机科学及编程导论课程节选

"Very encouraging, I think they've made a lot of significant progress especially in command and control and the quality of their Kandaks and their efficiency."

VOA: standard.2010.05.26

And with respect to securities selection, you want to consider your skills and you want to consider the efficiency of markets when you're making your decisions as to whether or not to pursue passive management or active management.

证券选择方面,要考虑自身能力与市场有效性,从而决定,是采用被动型管理,还是主动型管理

耶鲁公开课 - 金融市场课程节选

U.S.President Barack Obama has used his weekly address to encourage fiscal discipline in the federal government, and outline his plans to eliminate waste and increase efficiency.

VOA: standard.2009.04.25

And so instead of defining efficiency the way you've got it written there, I'm going to define what's called something different for a refrigerator which is called the coefficient of performance.

现在我们不用,效率的那个定义，我给出一个,有关制冷机的,新的定义,叫做制冷系数。

麻省理工公开课 - 热力学与动力学课程节选

"At a per-passenger-mile basis, rail is about three times as efficient as travel by car, in terms of fuel efficiency, and six times as efficient as travel by air, so there are pretty substantial pollution reduction benefits both in terms of greenhouse gases and other pollutants."

VOA: standard.2010.02.15

As long as it's reversible, you know what the efficiency has to be, and in principle, you could break it down into a bunch of steps that you could formulate as isothermal and adiabatic.

只要这个循环过程是可逆的，你们知道效率是多少，从理论上说，可以将总过程,分解成一系列绝热,和等温的小过程。

麻省理工公开课 - 热力学与动力学课程节选

And I just want to write those because what I really want to get at is what's the efficiency of the whole thing?

我写出这些的原因,是我真正想得到的是,它的效率？

麻省理工公开课 - 热力学与动力学课程节选

So that efficiency is something less than one, and we'd like to figure out what that is.

因此效率肯定小于一，接下来解释这是为什么。

麻省理工公开课 - 热力学与动力学课程节选

And we want to help you learn how to map a problem into a class of algorithms of some efficiency That's our goal.

学会如何将一个问题,映射到一类,提升效率的算法中去,这就是我们的目标。

麻省理工公开课 - 计算机科学及编程导论课程节选

I mean, you grew up in an age when computers were blazingly fast, and have tons of memory, so why in the world do you care about efficiency?

我的意思是你们是伴随着,计算机快速发展成长的，计算机都有这么大的内存,那还在乎效率干嘛呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

We've formulated one particular kind of engine, and seen how we can analyze what it does, come up with relations that seem of value for efficiency and other quantities.

这是一个很典型的热机，我们来分析它是怎么工作的，然后得到效率和其它一些,有用物理量之间的关系。

麻省理工公开课 - 热力学与动力学课程节选

And then we're going to turn to the question of efficiency. How do we measure efficiency of algorithms? Which is going to be a really important thing that we want to deal with, and we'll start it today, it's undoubtedly going to take us a couple more lectures to finish it off.

然后我们会回头继续讨论效率问题,我们如何计算算法的效率？,我们处理这些问题的时候,最重要的事情是什么？,我们今天要去讨论这个问题，毫无疑问我们要用,挺多节课来学习这个。

麻省理工公开课 - 计算机科学及编程导论课程节选

As T2 goes to zero, the cold reservoir, then this goes to zero and our efficiency approaches one.

是当T2达到零，也就是低温热源，达到零度的时候,效率可以达到一。

麻省理工公开课 - 热力学与动力学课程节选

OK. So to do this, we need a little more abstract way of talking about efficiency, and so, the question is, how do we think about efficiency? Typically there's two things we want to measure.

好，为了达到这个目的,我们需要用一种有点，抽象的方式去讨论效率，这衍生出来,一个问题，我们该怎么去认识效率？,主要来说我们有两个要量化的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you look at the behavior of groups of active managers and the dispersion of returns, I think it gives you some idea of what the efficiency is with which assets in these individual assets classes are priced.

如果观察一下主动管理型的基金经理们,和他们的投资收益分布,我想它会告诉你一些信息,哪些资产是有效定价

耶鲁公开课 - 金融市场课程节选