low, indistinct sounds

• soft, unclear speech or background noise

低沉而模糊的声音

• 轻声细语或背景杂音

muttered complaints or protests

• low expressions of discontent

低声的抱怨或抗议

• 低声表达的不满

abnormal heart sounds heard on auscultation

• noises from turbulent blood flow

心脏杂音

• 听诊时听到的异常心音

speaks softly or indistinctly

• utters quiet complaints
• makes a low continuous sound

低声或含糊地说

• 低声抱怨
• 发出低而持续的声音