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
이번 학회에서 많은 연구 결과가 발표되었습니다.ibeon hakhoeeseo manheun yeongu gyeolgwa ga balpyo doeeossseubnida.Many research results were presented at this academic conference.