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