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3rd metacarpal /ˈθɜːd mˌɛtəkˈɑːpəl/ n

中文：第三掌骨

中文 · 第三掌骨Español · 3er hueso metacarpianoFrançais · 3e métacarpien
Meaning：Long wing bone connecting the carpus to the first phalange of the 3rd finger and supporting the wing membrane.
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