So oxygen gets 3 pairs, and each chlorine gets 3 pairs, so now we're up to 9 pairs.

那么氧都有三对，每个氯有三对，那么现在我们用了九对了。

麻省理工公开课 - 化学原理课程节选

And those nine people make three-- each one-- three other people smile.

那九个人-,每个人再用笑容感染三个人。

哈佛公开课 - 幸福课课程节选

I think it's a remarkable dynamic that Mark started this company in 2004 and that first generation the first nine or ten years of the Internet did not have a Facebook-like company that was thinking through it in a simple way.

我认为马克在2004年开办的这个公司的影响巨大,因为互联网初期的那代人用了九、十年,都没能创办一家像脸谱网一样的公司,能用简单的思维考虑问题。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选