溯源
sù yuán
Maʼnosi
to investigate the origin of sth; to trace a river upstream back to its source
Ilovada oʻrganish → Chiziq tartibida yozish
sù yuán
to investigate the origin of sth; to trace a river upstream back to its source
Ilovada oʻrganish → Chiziq tartibida yozish