人口统计学 rénkǒutǒngjìxué demography Definitions Defs Origin Strokes Stroke Words Sentences Sents 人口统计学 人口統計學 rénkǒutǒngjìxué demography the study of human populations through statistics; population studies
人口统计学 人口統計學 rénkǒutǒngjìxué demography the study of human populations through statistics; population studies
