The walls were built extra thick to save heat and energy-efficient appliances kept energy use low.

VOA: special.2009.10.27

So that's the expected return and efficient portfolio frontier problem.

这就是预期收益,和有效边界问题。

耶鲁公开课 - 金融市场课程节选

And things are not as efficient as they were at the beginning of the day

而工作的进展也没有之前那么有效了。

Let's 课堂 - SpeakingMax英语口语达人

And so it is very important for the poorer people to have very efficient stoves that protect their forests and that protect their health."

VOA: special.2010.02.01

They would pull out your entire life history of contributions-- they had it because you had filed it all at the post office and everything was bureaucratic and efficient-- and they calculated, according to a formula, what you would get.

政府会取出你这一生的交保记录-,这是由你自己在邮局填写的,所有的一切都行之有效-,然后他们根据公式计算你能得到养老金。

耶鲁公开课 - 金融市场课程节选

And how the systems that we have designed for the house and we've used for the house how efficient they are and how little energy they use."

VOA: special.2009.10.27

Where those pieces, I would do the same thing with, I would divide them up into smaller chunks, and sort those. Is that going to give me a more efficient algorithm?

合并起来，而那些小列表,我又会把他们拆成更小的列表,再排序，这会给我,一个更高效的算法么？

麻省理工公开课 - 计算机科学及编程导论课程节选

Workers will also add energy efficient lights and improved building control systems.

VOA: special.2009.05.22

It imports it into our database and does some fancy indexing as we'll call it later in the term to make searches more efficient.

将它导入到我们的数据库中，并进行一些变址,这将在后期会提到,它可以使查找更高效。

哈佛公开课 - 计算机科学课程节选

A secondary benefit is getting gas-guzzling old clunkers off the road and replaced with more fuel-efficient band new models.

VOA: standard.2009.05.18

And perhaps we are less efficient than the other government.

也许另外一些国家又比我们有效率些。

普林斯顿公开课 - 国际座谈会课程节选

The report argues building a health system that is efficient and really works is not purely a financial matter.

VOA: standard.2009.05.21

There are a lot of people that can do work, and if you have a more efficient way to manage a large crowd of engineers, you can be very competitive in the technology world.

人们的工作能力毋庸置疑，如果你能够有效管理,一个大的团队，那么在这个领域，你的竞争力就提升了。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Chinese Society Entrepreneurs and Ecology represents 130 businessmen who have embraced the principles of green economy: one builds energy efficient high-rise buildings;

VOA: standard.2010.02.24

I think we need a whole electricity distribution system, which is more efficient and bigger, more flexible and more appropriate than we have.

我们需要一个更加有效,更加庞大，更加灵活的配电系统，的配电系统。

斯坦福公开课 - 经济学课程节选

Trains are fuel efficient, they relieve traffic and airport congestion and they also reduce our dependence on foreign oil, making passenger trains the safer,cleaner, greener transportation option."

VOA: standard.2010.02.15

Because that's the temperature at which many of the molecules in our bodies operate at their most efficient, and enzymes is the best example of that.

因为在正常体温下,体内许多分子活性最高,酶就是其中最好的例子

耶鲁公开课 - 生物医学工程探索课程节选

In contrast,a light bulb has much more impact in the use phase, where it's using the energy, and where you can reduce that with more efficient lighting technologies,"

VOA: standard.2009.03.30

In that process there is a metabolic engine at work, and some people have an efficient engine so that the calories in get banked in the fat, other people have an inefficient engine, that is the calories get wasted as body heat and things like that, and they tend not to gain weight.

这过程中人体内有个工作着的代谢引擎,有些人的代谢引擎效率很高,热量便转化为脂肪储存起来,另一些人的效率低下,能量就以体温等形式被浪费了,因此他们就不容易发胖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

He is the director of applied research for the Solid Waste Association of North America, a professional organization that promotes the efficient and environmentally-sound management of municipal solid waste.

VOA: standard.2010.08.05

so that you can solve it in the best and most efficient manner.

这样便可以用最好，最有效的方式解决问题。

有印象的教授 - SpeakingMax英语口语达人

The hotels use energy-saving lights and appliances, buy local wine and produce for their restaurants, compost organic waste, donate old linens and towels to charities, and use an energy-efficient, "green" local laundry.

VOA: standard.2009.03.30

I don't believe that markets are efficient and it doesn't really seem like it should be an open question.

我不相信市场是有效的,而且事实上这似乎,也不应该是一个开放式的问题。

耶鲁公开课 - 金融市场课程节选

"Two-point-four billion dollars in highly competitive grants to develop the next generation of fuel-efficient cars and trucks, powered by the next generation of battery technologies all made right here in the U.S.of A,"

VOA: standard.2009.08.05

In a sense, efficient markets would require that everybody -every analyst rushes out and completes Eric Lee's study.

在某种意义上,有效市场需要所有人,所有分析员一起去完成埃里克·李的研究

耶鲁公开课 - 金融市场课程节选

"The next thing is to work out how technology can be transferred from rich countries to poor countries and this will involve things like investment in renewable energy, investment in wind power and solar, investment in more efficient power stations,"

VOA: standard.2009.11.04

Now we need to think about a model of the stock market And the model we're going to use is based on what's called the Efficient Market Hypothesis.

现在需要想一想一个股市的模型是怎样的,我们要用的模型是,基于有效率市场假说的。

麻省理工公开课 - 计算机科学及编程导论课程节选

He's also decided to give up leadership in Light up the World Foundation to start a company in India that will develop a more energy-efficient and cheaper lighting system that he hopes will bring even more light to the world's poor.

VOA: standard.2009.12.13

And that does two things: bug one, it helps catch bugs in your code, and secondly it often converts it into a more efficient sequence of instructions before you actually go off and run it. All right?

这有两点好处：,第一是可以帮助你发现程序中的，第二是把你的代码,在运行之前,转换为更有效率的指令的集合，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

He estimates, for his purposes, and he shows you calculations of the efficient portfolio frontier.

他用自己的角度估算了参数,他还给出了计算有效边界的方法。

耶鲁公开课 - 金融市场课程节选