a black and white illustration of a doctor listening to a patient's heartbeat - listening to heartbeat 幅插畫檔、美工圖案、卡通及圖標
a businessman listening to the heartbeat of money using a stethoscope - listening to heartbeat 幅插畫檔、美工圖案、卡通及圖標
young boy (3-5) listening to doll's heartbeat with stethoscope - listening to heartbeat 幅插畫檔、美工圖案、卡通及圖標