Read Edit View history 泝源 sùyuán to trace back to the source Origin Definitions Defs Strokes Stroke Words Sentences Sents 泝源 sùyuán to trace back to the source To investigate the origin of something; to trace a river upstream to its source. Cross-References Synonym 溯源 sùyuán
泝源 sùyuán to trace back to the source To investigate the origin of something; to trace a river upstream to its source. Cross-References Synonym 溯源 sùyuán