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
이 시스템은 비능률적인것이 많아서 개선이 필요하다.i siseutemeun bineunryuljeogin geosi manhaseo gaeseoni piryohada.This system has a lot of inefficiencies and needs improvement.