Hey, Lily! Why do you look so excited today?

嘿，莉莉！你今天怎么看起来这么兴奋？

youdao

Rather than waiting to celebrate a big event, why not do it today?

为什么不今天就做而是等着去庆祝一个大的事件呢？

youdao

If you say, "Why do I have to go to work today?" how is that going to affect your attitude?

如果你说“为什么今天我还要去工作”，这会如何影响你的态度。

youdao

And then of course, once we figure out why not, we try and fix it. but today I'm going to emphasize not how do you fix it, but how do you find out what's wrong.

我们就会去尝试着修复程序，但是今天我强调的,并不是怎么去修复，而是怎么找出来错误原因。

麻省理工公开课 - 计算机科学及编程导论课程节选

The section when you do today is always the most popular section of the year, you'll know why after the section, and you can tell me afterwards if you think you figured out why.

今天你们要做的分组讨论,一直是每年最受欢迎的部分,讨论完了你们就明白了,如果你明白了的话,课后告诉我

耶鲁公开课 - 生物医学工程探索课程节选

We'll talk about some chemistry today, what DNA molecules are like, why they have the behavior that they do, and you need to understand this in order to understand how you manipulate DNA.

今天我们会谈到一些化学结构,比如DNA分子的形态,它们为什么会以这种形态存在,你必须先掌握这些,才能理解如何操控DNA

耶鲁公开课 - 生物医学工程探索课程节选

Why do most polls today rely primarily on phone banks?

CNN: The Polls

Why do submarines of today need conning towers?

FORBES: Connect

So why do so many people today see the decline of monolithic newspapers as a calamity rather than a sign of progress?

FORBES: A Crisis in Reporting?