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
병원에서 청력계를 사용하여 환자의 청력을 측정합니다.byeongwoneseo cheongnyeokgyeul sayonghayeo hwanjaeui cheongnyeogeul cheugjeonghamnida.The hospital uses an audiometer to measure the patient's hearing.