单词	Swainson's hawk
释义	Swainson's hawk noun Swain·​son's hawk ˈswān(t)-sənz-  : a buteo (Buteo swainsonii) chiefly of western North America and South America having pointed wings and usually a dark breast Word History Etymology William Swainson †1855 English naturalist First Known Use 1895, in the meaning defined above
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