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
그들은 소집단적 활동을 통해 더 나은 결과를 얻었다.geudeul-eun sojipdanjeok hwaldong-eul tonghae deo na-eun gyeolgwa-reul eodda.They achieved better results through group-oriented activities.