created sense approved 溯 · sù · go upstream
溯
sù
go upstream
to move or travel against the flow of a stream or river
船只正逆流而溯，寻找大河的源头。
verb
created sense approved 溯 · sù · trace
溯
sù
trace
to search back to an origin, source, or past time
这项传统的历史可以追溯到清朝初期。
created reference approved 溯/遡 → 溯 (variant)
溯 / 遡 sù
溯 sù
variant