Musculus mentalis

例句：

1. 1.The scientist was studying the brain's musculus mentalis.
   这位科学家正在研究大脑的肌肉。
2. 2. The patient had to learn how to control his musculus mentalis.
   病人必须学会如何控制他的肌肉。
3. 3.The researcher discovered that the musculus mentalis plays a crucial role in memory formation.
   研究者发现，大脑肌肉在记忆形成中起着至关重要的作用。