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 지식인연을 통해 서로의 아이디어를 공유했다.geudeul-eun jisikinyeon-eul tonghae seoro-ui aideul-eul gong-yuhada.They shared their ideas through an intellectual connection.