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
시간론은 시간의 본질에 대한 철학적 탐구입니다.siganlon-eun sigan-ui bonjil-e daehan cheolhakjeok tamgu-imnida.The theory of time is a philosophical inquiry into the nature of time.