They chose Andrea. Dr.Fay,operating for seven hours, was able to save Andrea's eyelid, eye muscles and socket.

VOA: standard.2010.06.30

If you don't give me seven hours a week, I don't know what I can do for you.

如果你们一周不学习7个小时，我不知道我能为你们做什么了。

麻省理工公开课 - 固态化学导论课程节选