musculus orbicularis oris

例句：

1. 1. The muscles in the face are responsible for smiling and frowning.
   脸上的肌肉负责微笑和皱眉。
2. 2. The doctor examined the patient's face muscles to determine if they were affected by the disease.
   医生检查了患者的脸部肌肉，以确定是否受到了疾病的侵害。
3. 3. During the surgery, the surgeon made use of the muscles in the face to lift the patient's head.
   在手术过程中，外科医生利用脸部肌肉将患者的头部抬起。