Groups of men formed large companies and began buying land in the area.

VOA: special.2009.02.11

A studio of three hours' lecture in a large lecture hall, and two hours of recitation in groups of thirty.

在一个大的讲堂的教室里,讲三个小时讲座，并以三十人为一组,进行两小时背诵。

麻省理工公开课 - 媒体、教育、市场课程节选

"As we've found with other large criminal groups, if you take their money and lock up their leaders you can loosen their grip on the vast organizations used to carry out their criminal activities,".

VOA: standard.2009.03.24