Altruism" is the biologists' term meaning kindness,generosity, and evolutionary biologists have worked really hard to explain why animals might evolve to be kind.

利他主义是生物学术语,意思是善良，慷慨，进化生物学家努力去解释,为什么动物进化趋向善良。

耶鲁公开课 - 心理学导论课程节选

For Comus, nature has given us all of her riches and it's our duty, it's our obligation, to spend them, to consume them, and to luxuriate in nature's generosity.

科玛斯认为，自然赋予我们她所有的财富，我们有职责有义务去使用消费它们，自然如此慷慨大方，我们有义务去享用。

耶鲁公开课 - 弥尔顿课程节选

It kind of feels like generosity, but it's also a self-interest that people perceive.

看起来这好像是出于慷慨，其实这也是人们的一种自利心。

耶鲁公开课 - 金融市场课程节选

And there's an evolutionary explanation for your generosity towards kin.

我们可以用进化论解释,人为什么会对亲属慷慨。

耶鲁公开课 - 心理学导论课程节选

His generosity was legend, but so was his cruelty.

他的仁慈和残忍都被人们当传奇一样诉说

耶鲁公开课 - 欧洲文明课程节选

Call it generosity between two strangers.

你可以称为陌生人之间的慷慨解囊。

哈佛公开课 - 幸福课课程节选