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来源:雅诚德英语网
These episodes of rapid evolution are separated by relatively long static spans during which a species may hardly change at all.
这些快速进化的阶段被相对较长的静态跨度分隔开来,在此期间,一个物种几乎不会发生任何变化。
These episodes of rapid evolution are separated by relatively long static spans during which a species may hardly change at all.
这些快速进化的阶段被相对较长的静态跨度分隔开来,在此期间,一个物种几乎不会发生任何变化。