Musculi rotatores thoracis

例句：

1. 1. The muscles in the back are important for supporting the spine.
   背部的肌肉对于支撑脊柱非常重要。
2. 2. The doctor advised him to strengthen his chest muscles for better breathing.
   医生建议他加强胸大肌以改善呼吸。
3. 3. During exercise, it is important to focus on strengthening all the major muscle groups.
   在锻炼时，重要的是专注于加强所有主要肌肉群。