The origin of feathers could be pushed back further still if the "fuzz" found on some pterosaurs is confirmed to be feathers, since these flying reptiles share an even older ancestor with dinosaurs.
如果某些翼手龙身上的“绒毛”被证实的确为羽毛的话，那羽毛的起源就可以上溯到更为远古的年代，因为翼手龙与恐龙共同拥有某个更为古老的祖先。
Different feathers have different patterns of colour, suggesting that Cretaceous dinosaurs-flying or otherwise-used their feathers for display.
不同的羽毛有不同的颜色样式，这表明白垩纪时期的会飞恐龙和陆地恐龙都利用羽毛来炫示自己。
Sasa and Feifei are two twin swallows. After they grew out feathers, their mother kept urging them to practise flying skills and train their stamina every day. Sasa was very assiduous.
沙沙和飞飞是一窝出生的两只燕子，他们刚刚长齐羽毛，妈妈时常提醒他们，要每天练习飞翔的技术和耐力。
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