"It is the first time that Africa is now giving money back to the Global Fund.

VOA: standard.2010.04.23

Welcome back for those returning, welcome to CS50 for those joining us for the first time.

欢迎老同学，也欢迎新同学。

哈佛公开课 - 计算机科学课程节选

So how would we go about solving this problem if I told you not only was there a maximum weight, but there was a maximum volume. Well, we want to go back and attack it exactly the way we attacked it the first time, which was write some mathematical formulas.

有些时候两个都重要,所以如果我告诉你这里不仅有,最大重量还有最大容量，我们应该怎么解决这个问题呢？,好了，我们想回过来然后,和第一次一样看看这个问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

"When you look at Salt Lake City, they didn't get it the first time. They redid their plan, they came back, and they were able to get their Olympics.

VOA: standard.2009.10.02