can·vas·back 
(kănvəs-băk′)
(kănvəs-băk′)n.
A North American diving duck (Aythya valisineria), having a reddish-brown head and neck and a whitish back in the male.
| 单词 | canvasback |
| 释义 | can·vas·back (kănvəs-băk′)n. A North American diving duck (Aythya valisineria), having a reddish-brown head and neck and a whitish back in the male. |
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