渊源[yuān yuán]
origin; source:
例:渊源极深
be closely connected;
历史渊源
historical origins;
文明的渊源
origin of civilization;
由于年代久远, 其渊源已无法考证。
It has an origin lost in the mists of antiquity.
1. parentage:panel of experts 专家小组 | parentage 渊源 | parties involved 交换中的各方