Tina is shopping with Kevin, and they say the difficult economy forced them to Christmas shop a little differently this year, to save money.

VOA: special.2009.12.21

Yeah, I'll save it.. It's a little bit annoying, but it makes the font bigger.

好，以这个数开始，让我们看看它干的怎么样。

麻省理工公开课 - 计算机科学及编程导论课程节选

What's going to save us is if we inject a little bit more reality back in the model, we're going to get back a more sensible result.

我们要做的是,注入一些更符合现实的元素,这会让我们得到更符合直觉的结果

耶鲁公开课 - 博弈论课程节选