其市值的70%被创始的四大家族所拥有。

It is publicly quoted but 70% of its shares belong to four founding families.

美菱集团是冰箱行业四大家族之一，十几年来一直保持前三位的市场占有率。

Meiling group is among the Big four in refrigerator industry, and it has kept its market share among Top 3 for more than ten years.

《红楼梦》是以贾、史、王、薛四大家族为背景，故事情节以贾宝玉、林黛玉的爱情为中心，贯穿全书的主线。

"Dream of the Red Chamber" is Jia, Shi, Wang Xue prominent as the background, story to Jia Baoyu and Lin Daiyu love as the center, the main thread running through the whole book.