It goes up, stays in the air for a very long time, but it falls on your head.

它先上升 在空中停留很长时间,但是它会直接落在头上

耶鲁公开课 - 基础物理课程节选

But essentially research that falls under or within the field of positive psychology.

但本质上属于积极心理学范畴。

哈佛公开课 - 幸福课课程节选