osteonosus

例句：

1. 1. The doctor performed an operation to remove the osteonous tumor from her pelvis.
   医生为她进行了一次手术，从骨盆中取出了骨瘤。
2. 2.She was diagnosed with a condition that affects the pelvic floor muscles.
   她被诊断出患有影响盆底肌肉的状况。
3. 3.During childbirth, the pelvic floor muscles are stretched and strengthened by the force of the baby's head.
   分娩期间，盆底肌肉因婴儿头部的拉力而被拉伸和加强。