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1.Researchers looked at data on the health of 70,000 female nurses and 1,500 male military veterans.
veteran老兵
The veteran soldier has fought many memorable battles.
这个老兵参加过许多难忘的战斗。
2.Our findings speak to the possibility that raising levels of optimism may promote longevity and healthy ageing.
longevity长寿
Human longevity runs in families
人类的长寿具有家族遗传性。
