在演化过程中一些鸟失去了飞行的能力。
In the course of evolution, some birds have lose the power of flight.
同时还阐述了演化观，本体在演化过程中的继承和被继承关系。
Ontology also has evolutionary history, which defines their inherited and inheriting relationships.
但是，仅仅多了一个基因的副本不能说明它在演化过程中有多重要。
But just having extra copies doesn't mean the gene is evolutionarily important.
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