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