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
그는 새로운 기술을 연구하는 개발원에서 일하고 있다.geuneun saeroun gisuleul yeonguhaneun gaebalwoneseo ilhago itda.He works at a development institute researching new technologies.