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Hummingbirds(蜂鸟)areoneofnature’smostenergeticflie...
问题详情: Hummingbirds(蜂鸟)areoneofnature’smostenergeticfliersandtheonlybirdstohover(盘旋)intheairbyrelyingontheirstrengthalone. Nowscientistshavefoundthatitistheratio(比值)ofth...
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hummingbirds造句
Whydohummingbirdsandgorillasbothhavebackbones?EitheroftwoSouthAmericanhummingbirds(Topazapyraora)havingcolorfulplumage.Butthoughtseludedher,dartinginandoutofhermindlikefrightenedhummingbirds.Mostbirds...