Musculus coccygeus

例句：

1. 1. He was paralyzed from the waist down after a car accident.
   他在一次车祸后下半身瘫痪了。
2. 2. The doctor advised him to rest for several days before starting his rehabilitation exercises.
   医生建议他休息几天再开始康复训练。
3. 3. The patient's condition improved significantly after receiving treatment.
   病人在接受治疗后情况明显好转。