The Taliban, once thought of as a defeated entity, has re-emerged as a full-blown insurgency.

VOA: standard.2009.08.03

So this design of having students on campus once a month for intensive classes allows students to continue working full time.

让学生每月来校一次,进行现场教学的设计,允许学生继续全职工作。

哈佛公开课 - 幸福课课程节选