hooked spine

例句：

1. 1. The patient had a hooked spine, which made it difficult for him to walk.
   病人有钩状脊椎，这使他难以行走。
2. 2. The scientist discovered a new species of fish with a hooked spine.
   科学家发现了一种带有钩状脊椎的新鱼类。
3. 3. The old man's spine was so weak that he could barely stand up without assistance.
   老人的脊椎非常虚弱，他几乎无法在没有帮助的情况下站立起来。