to trace back
01
spåra tillbaka, gå tillbaka till ursprunget
to identify the origin or source of something by following its history or development
Exempel
His family can trace back their ancestry to the 17th century.
Hans familj kan spåra sitt ursprung till 1600-talet.
Scientists traced back the virus to its original host species.
Forskare spårade viruset tillbaka till dess ursprungliga värdart.
