Cos I really struggled in high school-- a lot of it was difficult; a lot of it was painful, but it was all worth it.

因为我在高中很努力-,很多时很困难;,很多时很痛苦，但完全值得。

哈佛公开课 - 幸福课课程节选

Cos many people sit here during the lectures on self-esteem, for example, or when we talk explicitly about happiness, ?" they say, "Wait. Do I have self-esteem?"-- Thinking to themselves.

因为很多人坐在这听有关自尊的讲座时，比如，或者当我们明确地讨论幸福时，他们说，“等等，我的自尊心强吗-,他们自己想到。

哈佛公开课 - 幸福课课程节选

Cos I ask them to go back to interview their parents or whoever they could find out information about themselves, just like the professor was interviewing people to find out his own background and his family, I want them to go home, and interview their parents or grandparents, or aunts and uncles.

因为我让他们回家去采访,父母或任何他们能搜集到,关于自己信息的人，就像教授采访人们,来发掘自己的背景和家庭，我希望他们回家去，采访他们的父母,或爷爷奶奶，或舅舅舅妈。

麻省理工公开课 - 媒体、教育、市场课程节选

For example, this is x=t, x=t^, you're going to have x=sin t and cos t and log t.

例如,这是x=t,x=t^,你还会遇到正弦,余弦,对数函数

耶鲁公开课 - 基础物理课程节选

Once you do that, I think it's fairly clear that it has got a y component that's given by cosine the x component is negative.

用了这个结论,我想很明显,y 分量由 cos φ 给出,它的 x 分量是负的

耶鲁公开课 - 基础物理课程节选