sacral bone

例句：

1. 1. The patient's back wassore from sitting for too long.
   病人长时间坐着背部很痛。
2. 2. Thedoctor performed a spinal x-ray to diagnose the patient's condition.
   医生为患者做了脊柱X光检查以诊断病情。
3. 3. Thesurgeon removed the patient's scapula and attached it to the spine.
   外科医生移除了患者的肩胛骨并将其连接到脊柱上。