单语范例（未经PONS编辑处理）
Political demographers study issues like population growth in a political context.
en.wikipedia.org Demographers study how these characteristics impact, or are impacted by, various social, economic or political systems.
en.wikipedia.org The department employs people with a variety of skills, including statisticians, mathematicians, computer science specialists, accountants, economists, demographers, sociologists, geographers, social psychologists, and marketers.
en.wikipedia.org Formal demographers refer to population momentum as the size of the resulting stationary-equivalent population relative to the current size of the population.
en.wikipedia.org However, demographers do not consider it as such.
en.wikipedia.org