white-back
/ˈwʌɪtbak/noun
Any of various birds with white backs; especially (US ) the canvasback duck, Aythya valisineria.
Origin
Late 18th century. From white + back. Compare earlier white-backed.
| 单词 | white-back |
| 释义 | white-back/ˈwʌɪtbak/noun Any of various birds with white backs; especially (US ) the canvasback duck, Aythya valisineria. Origin |
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