一个来自美国的老人午夜时分在他宽大的卧室里快乐地跳着舞。
At midnight, an old man who comes from America was dancing happily in his own big bedroom.
《美国老年医学会杂志》上发表的一项新研究通过考察246名孩子的性格特征研究了这个问题，这些孩子都是100岁以上老人的后代。
A new study in the Journal of the American Geriatrics Society looked at this question by examining the personality characteristics of 246 children of people who had lived to be at least 100.
在美国，只有非常少的退休老人购买年金。
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