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 저효율성으로 인해 많은 자원을 낭비하고 있습니다.i siseutemeun jeohyoyulseong-euro inhae manheun jawon-eul nangbi-hago issseubnida.This system is wasting a lot of resources due to inefficiency.