"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

What I did in this diagram is I computed the efficient portfolio frontier-- now it's the blue line with three assets.

在这张图表中,我计算了有效边界-,蓝色线表示三种资产的组合。

耶鲁公开课 - 金融市场课程节选

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

That means that you want to pick, ultimately, a point on this-- this line is tangent to the efficient portfolio frontier with all the other assets in it.

那意味着你会最终会在这上面选一个点-,这条直线是与有效边界相切的,后者包含了所有的资产组合。

耶鲁公开课 - 金融市场课程节选

That efficient metabolism that banks calories is highly efficient, highly important, highly adaptable, under circumstances where food is scarce, but not efficient and not adaptive under modern food conditions in the developed world.

能高效存储能量的代谢系统,在食品短缺的情况下,非常重要,有着较强的适应能力,但却不能适应,现代发达国家的食品环境

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This was the special value that said to the computer string stops here and because you have that barrier given to you at the end of every string, just the most efficient way you can pass strings around is just by passing the address of their very first bytes, the location in RAM.

这是一个特殊的值，表示的是,字符串在这里结束，因为在每个字符串的末尾,都有那个关卡，这是一个最有效率的方式，你可以通过传递,字符串的第一个字节的地址来传递一个字符串，地址是在RAM中的。

哈佛公开课 - 计算机科学课程节选

Efficient markets" is a theory about-- well it came in about three decades ago, maybe it's closer to four decades ago-- it's a theory that financial markets work very well and incorporate information very well.

有效市场是...,大约三十年前,甚至四十年前,有人提出了这一假说,他认为金融市场运行良好,而且信息披露全透明

耶鲁公开课 - 金融市场课程节选

On the other hand--and this is something that I want to emphasize-- you don't want to carry that too far and one of the lessons of behavioral finance is that markets are not really efficient in a global sense.

而另一方面,我想强调的是...,不要认为这就是真理,行为经济学中的一课就说,从全球的角度看,市场并非全然是有效的

耶鲁公开课 - 金融市场课程节选

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

The ones who would seek out calories, the ones who could store and not waste energy, those with an efficient metabolism-- that is those people who took in calories and banked them into their body fat and stored against subsequent famine-- are the ones who would do the best under these circumstances.

那些寻找能量的人,那些储存而不浪费能量的人,那些有着高效代谢系统的人,那些人可以将摄入的热量储存为机体脂肪,以用于对抗即将到来的饥荒,在早先的情况下他们是最适应环境的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选