eredetére vezet vissza (valamit) angolul

trace something back to its source▼verb
[UK: treɪs ˈsʌm.θɪŋ ˈbæk tuː ɪts sɔːs] [US: ˈtreɪs ˈsʌm.θɪŋ ˈbæk ˈtuː ˈɪts ˈsɔːrs]