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
청능학은 청각 장애인을 돕는 중요한 학문입니다.Cheongneunghakeun cheonggak jang-aein-eul dopneun jungyohan hakmunimnida.Audiology is an important field that helps individuals with hearing impairments.