这就是为什么这个世界总是盼望着美国。

That's why the world has always looked to America.

youdao

学习为什么这个世界总是在变，什么使它变化。

Learn why the world wags and what wags it.

youdao

我个人不明白为什么这个世界任何人都需要一个秤。

Personally, I don’t understand why in the world anybody would need a scale.

youdao

Why in the world, over that period of time, would people's relationships with food get even worse?

但是为什么在那之后,在这个世界上,人和食物之间的关系变得越来越糟呢

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And I mentioned three reason why we want to shift this pendulum despite the fact that there are rising levels of depression around the world, on college campuses in United States,China,Australia,UK.

我提过三个原因,关于为什么要改变这个比率,尽管世界上越来越多人抑郁，遍布美国，中国，澳大利亚，英国所有大学。

哈佛公开课 - 幸福课课程节选

So this is a game that occurs in soccer and just to give an idea of how important it is for those people who are unfortunate enough not to be soccer fans here, the last World Cup was decided on penalty kicks.

所以这是一个有关足球的博弈,我先告诉在座的不是球迷的同学,为什么说这个很重要,因为上届世界杯冠军就是点球决定的

耶鲁公开课 - 博弈论课程节选