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
시민운동은 사회의 변화를 이끌어내는 중요한 역할을 합니다.siminundongeun sahaui byeonhwareul ikeureonaeneun jungyohan yeogaleul hamnida.The citizen movement plays an important role in bringing about social change.