female doctor giving a medical presentation on human lungs. healthcare and education concept - 肺 幅插畫檔、美工圖案、卡通及圖標演示 - 演講, 插圖, 矢量圖
doctor listening to girl’s breathing, heartbeats using a stethoscope. teenage girl visiting paediatrician for annual preventive physical examination. concept of preventive health care for adolescents - 肺 個照片及圖片檔體檢, 醫生, 年輕成年人