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4th metacarpal /ˈfɔːθ mˌɛtəkˈɑːpəl/ n

中文：第四掌骨

中文 · 第四掌骨Español · 4° hueso metacarpianoFrançais · 4e métacarpien
Meaning：Long wing bone connecting the carpus to the first phalange of the 4th finger and supporting the wing membrane.
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