This is the story of how one man combined LEDs with solar energy technology to bring high-quality, low-cost electric light to poor people around the world.

VOA: standard.2009.12.13

All right. Then we're going to set low to-- low and high, and we're going to perform exactly the process I talked about.

不满足条件,我们就可以直接停止运行了，好，接下来我们要定义边界值,然后按照我之前。

麻省理工公开课 - 计算机科学及编程导论课程节选

You don't want--you know that you'd like to take money away from yourself in the high-outcome years and give it to yourself in the low-income years.

你不想...你知道,你想在高收入的年份中,拿出一点钱,给你自己低收入的年份

耶鲁公开课 - 金融市场课程节选

If x is high relative to x-bar--this is positive-- then y tends to be low relative to its mean y-bar and this is negative.

如果x比x均值要大,这个为正,而y比y均值小,这个为负

耶鲁公开课 - 金融市场课程节选