As part of the research project, nine farmers were given materials and trained how to build and use a hoop house.

VOA: special.2009.12.22

Understand it through research as well as through the search-- through introspection, and then make the best use of it.

通过研究，探究-,通过内省来理解它，然后好好地利用。

哈佛公开课 - 幸福课课程节选