The clinical trial was designed such that almost two million elementary school children were given this test vaccine.

该临床试验的计划是,向近二百万的小学学生,接种这种测试疫苗

耶鲁公开课 - 生物医学工程探索课程节选

Well, I guess the craziest one would be that I found my old elementary school art teacher through Facebook.

我想最疯狂的事就是通过Facebook我找到了从前小学的美术老师。

用社交网站找到的人 - SpeakingMax英语口语达人

If you experience a lot of stress in high school and elementary school and were unhappy, generally the best predictor would say that you would feel the same way a month into your Harvard experience.

如果你在高中,初中时经历过很大压力而且不快乐，一般来说最好的预言家会说,在哈佛呆上一个月，你会有同样的感觉。

哈佛公开课 - 幸福课课程节选