外转肌

例句：

1. 1. Thesurgeon used a scalpel to cut through the skin and expose the underlying tissue.
   外科医生用一把手术刀切穿了皮肤，露出了下面的组织。
2. 2. The patient was able to move his arm by using the external rotator muscle.
   病人能够通过使用外转肌来移动他的手臂。
3. 3. In sports, athletes often use external rotator muscles to lift heavy weights.
   在体育中，运动员经常利用外转肌来举起重物。