papillary muscle

例句：

1. 1. The heart's papillary muscles are responsible for pumping blood through the body.
   心脏的乳头肌负责将血液泵送到身体各处。
2. 2. The surgeon removed the papillary muscle to repair the damaged tissue.
   外科医生切除了乳头肌以修复受损的组织。
3. 3. The patient was diagnosed with a condition that required the removal of the papillary muscle.
   患者被诊断出患有一种需要移除乳头肌的情况。