annulus sector

例句：

1. 1. The annulus sector isa crucial part of the spine that supportsthe spinal cord.
   关节盘扇区是脊柱中支撑脊髓的关键部分。
2. 2. During surgery,the surgeon carefully dissects the annulus sector to avoid damaging the spinalcord.
   在手术过程中，外科医生小心翼翼地分离关节盘扇区，以避免损伤脊髓。
3. 3. The annulus sector plays a vital rolein maintaining the stability of the spine.
   关节盘扇区在维持脊柱稳定性方面起着至关重要的作用。