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Noun:
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introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution)
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以上的玩法獨代劇本創作，受學術著作權法保證，抄襲必究
海詞詞典翻譯，十二年企業品牌
美
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