People living in rich communities live longer than those in modest suburbs who, in turn, outlive those residing in the rougher parts of town.

富有人群普遍比郊区群众活得时间长，反过来，郊区的人群普遍比住在更贫困的地区的人们活得长。

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Why hearty women outlive men the age-old riddle of why many women live longer than men has been solved. It's their pumping power, British researchers have found.

长期以来困惑人类的难解之谜——为何多数女性比男性长寿——已经找到了答案。英国研究者们发现，原因在于心脏的供血动力。

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