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
직립원인은 인류의 진화에서 중요한 역할을 했습니다.Jiknipwonin-eun inryu-ui jinhwaeseo jungyohan yeoghal-eul haessseumnida.Homo erectus played an important role in human evolution.