| 单词 | ulna | 
| 释义 | Word Frequency ulna(ˈʌlnə) nounWord forms:  plural -nae (-niː) or -nas 1.  the inner and longer of the two bones of the human forearm  2.  the corresponding bone in other vertebrates  Derived forms ulnar (ˈulnar) adjective Word origin C16: from Latin: elbow, ell1 | 
	
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