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
의사들은 투조를 사용하여 환자의 신체 내부를 검사합니다.uisadeul-eun tujo-reul sayonghayeo hwanja-ui sinche ib-eul geomsa-hamnida.Doctors use transillumination to examine the inside of the patient's body.