wristbone的意思|示意
美 / /
英 / /
wristbone相关例句
In the theropods that were closely related to living birds, a particular wristbone was wedge-shaped, allowing them to bend their hands.
在与现代鸟类亲缘关系较为接近的兽脚亚目恐龙身上存在一块特殊的楔形腕骨，正是这块腕骨的存在它们的前肢才能得以弯曲。