spine in group

例句：

1. 1. The doctor examined her spine to find out the cause of her pain.
   医生检查了她的脊柱以找出她疼痛的原因。
2. 2. The old man had a bad back and needed to see a specialist.
   这位老人背部不好，需要去看专家。
3. 3. The scientist studied the structure of the human spine to understand its function.
   科学家研究了人类脊柱的结构，以了解其功能。