简体
繁體
pīnyīn
ㄅㄆㄇㄈ
sùyuán
to investigate the origin of sth
溯源
to investigate the origin of sth; to trace a river upstream back to its source
Not found in HSK word list
Appears in 0.1442% of movies
37551st most common word in movies
39872nd most common word in books
CC-CEDICT