Roughly three-quarters of the US population growth that did occur over the past decade was due to immigrants, according to an analysis of census data by the Center for Immigration Studies.

按照由美国移民研究中心对于人口调查数据的分析，在过去十年中，大约四分之三的美国人口增长要归功于移民。

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After children, housework increases three times as much for women as for men, according to studies from the Center on Population, Gender and Social Equality at the University of Maryland.

根据马里兰大学，人口、性别和社会平衡中心的研究结果，有孩子之后，对于女性而言，家务活比男性增加了3倍。

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After children, housework increases three times as much for women as for men, according to studies from the Center on Population, Gender and Social Equality at the University of Maryland.

根据马里兰大学，人口、性别和社会平衡中心的研究结果，有孩子之后，对于女性而言，家务活比男性增加了3倍。

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