regurgitant murmur

例句：

1. 1. The doctor listened to the patient's heart and heard a regurgitant murmur.
   医生听了病人的心脏，听到了逆流性杂音。
2. 2.The patient was diagnosed with a regurgitant murmur after undergoing an echocardiogram.
   患者在接受超声心动图检查后被诊断出有逆流性杂音。
3. 3. The murmur was caused by the patient's heart valves not functioning properly, leading to a regurgitant murmur.
   杂音是由于患者的心脏瓣膜功能不正常导致的逆流性杂音。