Family and friends of jailed U.S.-Iranian journalist Roxana Saberi are saying they are relieved she has decided to put an end to her two-week old hunger strike, in the aftermath of an Iranian pledge to hear her appeal next week.

VOA: standard.2009.05.06

Then next week we'll do more complicated problems that involve motion in higher dimensions, how to go to two dimensions or three dimensions.

下周我们将会处理更复杂的问题,包括更高维数的物体运动,如何处理二维以及三维运动

耶鲁公开课 - 基础物理课程节选