●ˈcentre on sb/sth●ˈcentre sth on sb/sth ( ˈcentre upon sb/sth, ˈcentre sth upon sb/sthmore formal) to give a lot of attention or thought to one particular activity, idea or person, etc.（注意力或思想）集中于，倾注于；把（注意力或思想）集中于◆The discussions centred on the hostage issue. 讨论围绕人质问题展开。◆Public interest centred largely on the team’s stars. 公众关注的焦点主要是该队的明星。◆The group has centred its attention on the need for reform. 该小组将其注意力集中在改革的必要性上。◆His research is centred on the effects of unemployment. 他的研究以失业的影响为主要课题。NOTEOften used in the passive.常用于被动语态。[v + prep][v + n/pron + prep]