parosteal

例句：

1. 1. The surgeon removed the parosteal flap to repair the wound.
   外科医生切除了骨膜瓣来修复伤口。
2. 2. The patient's bone was exposeddue to a severe infection of the parosteal layer.
   由于严重感染了骨外膜层，患者的骨头暴露了出来。
3. 3.The research focused on the role of theparosteal cells in bone regeneration.
   研究专注于骨外膜细胞在骨再生中的作用。