Some college presidents and others have suggested that a lower drinking age could have the effect of reducing alcohol abuse.

VOA: special.2009.08.07

So if you think of the effect of technology on the different populations, the young-age and the adult-age learners.

所以在思考技术对,不同人群的影响时，要想到青年和成年学者。

麻省理工公开课 - 媒体、教育、市场课程节选