So in retrospect, I think the way to deal with crisis, deal with challenge, deal with difficult times, is like this: First, you need to be realistic.

回首去年，我们应对危机，面对挑战时，所采取的方法就是：,首先，要变得现实一些。

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

And then we hand you 140,000 English words in the form of a big text file much like our aspiring pre-med students in recent months, and we challenge you to implement the fastest spellchecker possible.

然后我给你一个包含1万4千单词的超大文本,就跟前段时间那位,有抱负的医学预科班的学生一样,我想让你在最短时间内实现拼音检查。

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Sounds like a neat challenge.

听起来像个还不错的挑战。

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Are you among those more comfortable, have you taken any computer science, were you programming at the age of 10 but you'd actually like to learn a bit about things you don't yet know and challenge yourself with new content or are you somewhere in between?

你对电脑比较熟悉么，你上过计算机专业方面的课程吗？,你是不是10岁就会编程,来上课的目的只是为了学习未知的知识,或者用新知识来挑战战自我？,还是二者兼有？

哈佛公开课 - 计算机科学课程节选