有关她们的回答的数据分析表明，在人类的进化史上，那些比较喜欢伴侣有利他行为倾向的人会更多地选择比较无私的人作为配偶。
Statistical analysis of their responses suggested that, in our evolutionary past, those with a stronger mate preference towards altruistic behaviour mated more frequently with more altruistic people.
许多诊所有自己的捐助者计划，那里的妇女出于纯粹的利他主义，高兴地给予帮助。
Many clinics have their own donor egg programmes, where women are happy to help for purely altruistic reasons.
北艺术家越来越多地前往意大利他们在那里接触到古老的艺术，以及艺术的文艺复兴时期意大利。
Northern artists increasingly traveled to Italy where they were exposed to the art of antiquity as well as the art of Renaissance Italy.
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