●ˈturn on sth ( ˈturn upon sthmore formal) 1. (BrE) to depend on sth in order to have a successful result依靠；视乎；取决于◆Her future career turns on this interview. 她的事业前途就押在这次面试上了。◆The case turns on whether the police can prove that the driver knew he had hit something. 这件案子取决于警方能否证明司机知道他撞到了东西。◆Much turns on the outcome of the peace talks. 事情主要取决于和谈的结果。SYNhinge on sth2.if a conversation, an argument, etc. turns on sth, it has that as its main subject以…为议题◆Their talk turned on the likelihood of his return (= if he was likely to return or not). 他们谈的主要是他是否有可能回来。[v + prep]