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
우주선이 발사되기 전에 부스터로켓이 점화되었습니다.ujuseoni balsadoegi jeon-e buseuteuroket-i jeomhwa doeeossseubnida.The booster rocket was ignited before the spacecraft was launched.