Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
우주기원론은 우주의 기원과 발전을 설명하는 이론입니다.ujugiwonroneun ujui giwon-gwa baljeon-eul seolmyeonghaneun il-eonimnida.Cosmogony is a theory that explains the origin and development of the universe.