zhuī​sù HSK7

trace back

追溯 zhuī​sù
trace back verb
to trace something back to its origins or a point in time; to date from

This custom can be traced back to the Tang Dynasty.

go upstream verb
to travel or look back towards the source of a stream or river

The expedition decided to trace back up the river to find the water source.

Frequency

Movie subtitles
3.55 per million appears in 2% of films
Written text
4.77 per million

Details

HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT