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 결찰사를 사용하여 수술 중 출혈을 방지합니다.uisadeul-eun gyeolchalsa-reul sayonghayeo susul jung chulhyeol-eul bangjihamnida.Doctors use ligatures to prevent bleeding during surgery.