- just as birds did millions of years ago.
就像数百万年前的鸟类那样 - Feathers, that first evolved to keep dinosaurs warm,
羽毛最初进化是为帮助恐龙保暖 - have become specialized for aerial mastery.
如今已变成驾驭天空的专用工具 - And that's not the only change.
这还不只是唯一的变化 - Teeth have been replaced by beaks...
牙齿被喙取代 - ...that allow them to feed on new diets.
使其能够以新的食物为食 - But advances in feeding and flight alone
但仅靠进食与飞行上的进步
And that's not the only change. 这还不只是唯一的变化
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