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

There's this American movie "Animal House" about this like, crazy fraternity.

有个美国电影叫“动物之家”，讲述了一个很疯狂的男大学生联谊会。

有趣的吃东西协会 - SpeakingMax英语口语达人

Along these lines, the evolutionary biologist Richard Dawkins took the general step of suggesting that animals are the vehicles through which genes exploit to reproduce.

按此种方法，进化论生物学家理查德·道金斯,采取常规方式建议到动物是工具,可被用于繁衍基因。

耶鲁公开课 - 心理学导论课程节选

Well, let's see, a biologist might study, or a zoologist might study, cats.

比如说,生物学家,或者动物学家可能会研究猫

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