The U.N.study finds nearly one million Afghans between 15 and 64 years old are suffering from some form of drug addiction.

VOA: standard.2010.06.23

And one thing I would strongly suggest is to form some sort of study groups, either formally or informally.

我强烈建议大家建立一些学习小组,正式的或非正式的都可以

耶鲁公开课 - 心理学导论课程节选

And one thing I would strongly suggest is to form some sort of study groups, either formally or informally.

我强烈建议大家建立一些学习小组,正式的或非正式的都可以

耶鲁公开课 - 心理学导论课程节选