Research has shown that people who volunteer often live longer.
研究表明，志愿者通常活得更长。
-- Allen Klein 艾伦·克莱恩
Research has shown that people who volunteer often live longer.
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Research has shown that people who volunteer often live longer.
研究表明，志愿者通常活得更长。
-- Allen Klein 艾伦·克莱恩
