An example of macroevolution is the appearance of feathers during the evolution of birds from theropod dinosaurs.
宏进一个例子是鸟类在从兽角亚目恐龙进期间羽毛出现。
An example of macroevolution is the appearance of feathers during the evolution of birds from theropod dinosaurs.
宏进一个例子是鸟类在从兽角亚目恐龙进期间羽毛出现。
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