the fact of sth, such as a piece of land, a building or a company, being owned equally by more than one person or group 共同所有权（土地、建筑物或公司由一个以上的人或集团平均拥有）◆land in common ownership 共同所有的土地
the fact of one or more companies being owned by the same person or group 共同所有权（同一个人或集团拥有一家或多家公司）◆The directive allows common ownership of track and rail operators by a single group. 指示允许同一个集团共同拥有轨道和铁路公司。