echo-cardiograph

例句：

1. 1. The echocardiogram revealed a significant heart valve problem.
   心电图显示心脏瓣膜存在重大问题。
2. 2.Echocardiography is a non-invasive method used to diagnose heart conditions.
   超声心动图是一种无创方法，用于诊断心脏病。
3. 3.During the echocardiogram, the doctor could see the patient's heart function in real-time.
   在心电图检查中，医生可以实时看到患者的心脏功能。