noun 下载 🔗分享 人口统计学，人口学. The study of human populations and how they change. Examples : "The government uses demography to plan for future needs, such as building new schools based on the expected number of children in an area. " 政府利用人口统计学来规划未来的需求，比如根据一个地区预计的儿童数量来修建新学校。 human statistics society science organization 与AI对话词汇游戏阅读练习
