Since we would be traveling to several places on the world, there were several categories that listed the places that were going.

因为我们要去,世界上的几个地方旅行，所以将它们,分成了几类。

麻省理工公开课 - 媒体、教育、市场课程节选

There's always more information pennpositivepsych.org hat can be found on our website at pennpositivepsych.org or you can email us the address listed.

在我们的网站上,可以了解到更多信息,也可向列出的地址发邮件。

哈佛公开课 - 幸福课课程节选