| 单词 | 骨节 |
| 释义 | 〔alula〕A small joint in the middle of a bird's wing, homologous with the thumb and bearing three or four quill-like feathers. Also called bastard wing ,spurious wing 小翼羽：鸟翅中部的小骨节，与大拇指同源，上有三四片羽毛 也作 bastard wing,spurious wing〔eburnation〕Degeneration of bone into a hard, ivorylike mass, as that which occurs at the articular surfaces of bones in osteoarthritis.骨质象牙化：骨质变质为坚硬的象牙状的块体，类似于患骨节炎时骨关节表面出现的情况 |
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