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 심전계를 사용하여 환자의 심장 상태를 검사합니다.byeongwoneseo simjeonggye-reul sayonghayeo hwanja-ui simjang sangtaereul geomsa-hamnida.The hospital uses an electrocardiograph to examine the patient's heart condition.