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
상호조절은 두 개체 간의 상호작용을 설명하는 데 중요합니다.sanghojojeol-eun du gaechi gan-ui sanghojag-yong-eul seolmyeonghaneun de jungyohamnida.Coadjustment is important for explaining the interactions between two entities.