Humans are very much alike genetically, with most of the variation within — rather than between — ethnic groups.
人类在遗传上太相像了，因为大部分变异是在种族群体之内而不是在种族群体之间。
Humans are very much alike genetically, with most of the variation within — rather than between — ethnic groups.
人类在遗传上太相像了，因为大部分变异是在种族群体之内而不是在种族群体之间。
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