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 this animal makes milk, it makes all the normal milk proteins, but it also activates your gene of interest as well.

那么当这一后代泌乳的时候,它不仅表达出自身正常的奶蛋白质,也激活了目的基因的表达

耶鲁公开课 - 生物医学工程探索课程节选