Then they rubbed the clothes on flat pieces of wood, squeezed out the water and hung each piece to dry.

VOA: special.2010.03.28

And then I could put a flat end here and I could put phosphorus here.

然后我把一个末端平面放在这儿,一块磷放在这儿。

麻省理工公开课 - 固态化学导论课程节选