This normal weight animal like this has its whole equilibrium thrown off, its homeostasis thrown off when its dietary conditions change.

在饮食条件发生变化时,这些正常体重动物的生理平衡被打破,于是摈弃了原来的平衡饮食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

When monkeys get together to kill and eat somebody they make a kind of a laughing noise and chimpanzees laugh when they tickle each other.

猴子一起猎杀其他动物时,它们会发生出一种笑声,黑猩猩胳肢时也会笑。

耶鲁公开课 - 心理学导论课程节选

So, this all seems a very technical phenomena related to animals and the like but it's easy to see how it generalizes and how it extends.

经典条件作用似乎是关于动物的,科学现象,但其实典条件作用发生,及其相关概念都简单易懂。

耶鲁公开课 - 心理学导论课程节选