One area that offers many kinds of outdoor activities is called the Potomac Highlands.

VOA: special.2009.07.20

Most of the activities we do in my sector are in fact Falls into the second area of the research.

我们部门所做的大多数工作,都属于这第二类型的研究。

麻省理工公开课 - 媒体、教育、市场课程节选

Most of the activities we do in my sector are in fact Falls into the second area of the research.

我们部门所做的大多数工作,都属于这第二类型的研究。

麻省理工公开课 - 媒体、教育、市场课程节选