剑桥词典a system for preserving a group's beliefs , customs , and history , in which parents tell their children about them, and the children tell their children , and so on 口头传统，口头文化（某一群体对其信仰、习俗、历史的传承，由父母口头传授给孩子，一辈一辈传授下去） 返回 oral tradition