They're made just for running.

VOA: standard.other

From a psychological point then, animals have evolved to be nice to their kin, particularly their children, and particularly in birds and mammals.

从心理学角度看，动物进化趋向于对自己的亲人有益，特别是自己的孩子，以鸟类和哺乳类为代表。

耶鲁公开课 - 心理学导论课程节选

But what he's capturing is the logic, the ultimate causation of our feelings towards our kin.

但他在运用逻辑，我们对亲人有感情的根本原因。

耶鲁公开课 - 心理学导论课程节选

Whoever does work on it, that person is cut off from among his kin.

不管谁在这一天工作，这个人要和他的家族断绝关系。

耶鲁公开课 - 旧约导论课程节选

Our genes have wired us up our brains up to love our children and love our kin because, in this way, our genes manage to replicate themselves.

基因把我们联系在一起,让我们去爱孩子，爱亲人，因为，这种方式，基因可以复制。

耶鲁公开课 - 心理学导论课程节选

I want to then deal with feelings towards our kin, people we're genetically related to, and then--and this will take us to the next class, feelings towards non kin.

然后对我们家族的情感分析，就是同我们有基因关系的人，然后下节课，同家族无关的情感。

耶鲁公开课 - 心理学导论课程节选

One answer is kin selection.

第一个答案是亲缘选择。

耶鲁公开课 - 心理学导论课程节选