To measure perceptions of social conflict, a total of 1, 815 persons age 16 and older were interviewed July 20-Aug. 2, 2009.

这项调查共对1815个年龄在16岁及以上的人进行了访问，并记录了他们对社会冲突的看法。

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A survey by the American Association of Retired Persons (AARP) indicates that 84 percent of Americans want to stay in their present homes as they age.

美国退休人员协会(AARP)所做的调查显示，84%的美国人希望年老的时候待在他们现在的家中。

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This paper reports the shape, density and size of endothelial cells of central cornea which were observed under noncontact specular microscope in 107 normal persons with a wide range age.

本文报道应用非接触式角膜内皮显微镜，观察107例不同年龄正常人角膜中央部内皮细胞的形态，密度和面积的结果。

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The president took his campaign for health care reform to the headquarters of the American Association of Retired Persons, a powerful organization representing the interests of Americans over the age of 50.

VOA: standard.2009.07.28

The status dropout rate describes the number of persons in a particular age cohort who lack a high school diploma.

UNESCO: II Part Analytic Section

Persons with a family history of colon cancer at an early age, or a history of inflammatory bowel disease such as ulcerative colitis, may benefit from screening at an earlier age and may be best served with colonoscopy rather than the other screening techniques.

CNN: Are colonoscopies really necessary for people over 50?