词汇	infant civilization
释义	infant civilization 初期文明
随便看	reciprocal dyadic reciprocal echo reciprocal effect reciprocal eigenvalue reciprocal electric outlets reciprocal ellipsoid reciprocal emotion reciprocal encroachment reciprocal energy theorem reciprocal-energy theorem reciprocal energy theorm reciprocal enforcement reciprocal engine reciprocal equation reciprocal equation of common-density effect Reciprocal Evolutional Two-level Game reciprocal exchange reciprocal exchange of business reciprocal exchonge reciprocal excitation reciprocal exclusive dealing reciprocal exemption reciprocal exemption of taxes reciprocal exemption statutes reciprocal expression