名词
中文翻译：第二心音
同义词：
['second heart murmur', 'second heart sound']
例句：
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1.The doctor listened to her chest and heard the second heart sound.
医生听了她的胸部，听到了第二心音。
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2. During surgery, the second heart sound is a sign of good circulation.
在手术中，第二心音是良好循环的标志。
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3. The patient's condition improved after receiving treatment, but the second heart sound remained.
病人在接受治疗后病情有所好转，但第二心音仍然存在。