tripleback

例句：

1. 1. The scientist discovered the spine of a new species of bird.
   科学家发现了一种新鸟类的脊柱。
2. 2. The old man was in pain because of his backbone injury.
   老人因为脊椎受伤而疼痛难忍。
3. 3.The doctor advised the patient to exercise regularly to maintain their spine health.
   医生建议患者定期锻炼以保持脊椎健康。