人口统计学还包括对非生物物体的研究，如灯泡、出租车和建筑物，因为这些也属于种群。
Demography also includes the study of non-living objects like light bulbs and taxi cabs and buildings because these are also populations.
Launer是资深研究员，也是国家老年流行病学、人口统计学、生物统计学实验室的神经流行病学部门的主管。
Launer is a senior investigator and the chief of the Neuroepidemiology Sectionat the National Institute on Aging's Laboratory of epidemiology, Demography, and Biometry.
Launer是资深研究员，也是国家老年流行病学、人口统计学、生物统计学实验室的神经流行病学部门的主管。
Launer is a senior investigator and the chief of the Neuroepidemiology Sectionat the National Institute on Aging's Laboratory of epidemiology, Demography, and Biometry.
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