| 词汇 | vestigial | 
| 释义 | vestigial  adjective uk/vesˈtɪdʒ.i.əl/ us/vesˈtɪdʒ.i.əl/  [ before noun ]残留的,残余的  being a small remaining part or amount  medical specialized(尤指身体部位)发育不全的,退化的  used to describe something, especially a part of the body, that has not developed completely, or has stopped being used and has almost disappeared  a vestigial organ/limb/tail 退化的器官/上肢/尾巴  | 
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