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2nd metacarpal /ˈsɛkənd mˌɛtəkˈɑːpəl/ n

中文：第二掌骨

中文 · 第二掌骨Español · 2° hueso metacarpianoFrançais · 2e métacarpien
Meaning：Long wing bone connecting the carpus to the first phalange of the 2nd finger and supporting the wing membrane.
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