释义 |
ring-necked duck
ring-necked duckn. A duck (Aythya collaris) of North and Central America having a distinctive light ring behind the tip of the bill and, in the male, a light chestnut ring around the neck. Also called ring-bill.ring′-necked` duck′ n. a North American diving duck, Aythya collaris, having a chestnut ring on the neck and a white one on the bill.
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