You're taking advantage of a promoter system, or a gene activation system, that this species knows about because adult animals can make milk.

我们之所以能利用这个启动子系统,或者称之为可以被这一物种识别的,基因活化系统,是因为成年动物可以泌乳

耶鲁公开课 - 生物医学工程探索课程节选

Once we've made some generalizations about language in this narrow sense, we could then ask, and we will ask, to what extent do other systems such as animal communication systems relate to this narrower definition.

一旦我们在狭义上,得出了某些关于语言的概论,那我们就可以发问,诸如动物交流系统之类的其他系统,会在多大程度上,符合这个狭隘的定义呢

耶鲁公开课 - 心理学导论课程节选