Researchers followed a sample of more than 2, 000 people, who were aged 65 or over when they took part in the General Household Survey in 1994.
研究人员对年龄在65岁或以上，参加了1994年综合住户统计调查的2000多人进行了跟踪考察。
Researchers followed a sample of more than 2, 000 people, who were aged 65 or over when they took part in the General Household Survey in 1994.
研究人员对年龄在65岁或以上，参加了1994年综合住户统计调查的2000多人进行了跟踪考察。
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