to chase
to go upstream
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→zhui1su4 • zhuīsù
to trace back to
trace back to, traced back to, tracing back to, traces back to
這 事件 可 追溯 到 去年。
This event can be traced back to last year.
這 節日 可以 追溯 到 古代。
This festival can be traced back to ancient times.
污染 源頭 被 追溯 到 一 家 工廠。
The source of pollution was traced back to a factory.