After several generations of evolution (degradation), these birds can not know many birds fly, because once again appeared predators but unable to escape or against extinction.
经过数代的进化(退化)，这些鸟类已经不再会飞翔，很多鸟类因为再次出现了天敌却无力逃生或对抗而灭绝。
Mankind is a part of the universe (the nature). After life evolution of several billion years, the DNA of mankind and plants, animals, which have consanguineous relationship.
人是宇宙大自然的一部分。上几亿年的生命进化，人与植物、动物dna是类同的，有密切的血缘关系。天人在合一的层面上是同构的。
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