created sense approved 溯源 · sùyuán · investigate origin
溯源
sùyuán
investigate origin
to investigate the origin or historical root of something
专家们正在对这种文化现象进行深入的溯源研究。
verb
created sense approved 溯源 · sùyuán · trace upstream
溯源
sùyuán
trace upstream
to trace a river upstream back to its source
考察队决定沿着这条大河溯源,寻找它的发源地。
verb