So when Pavlov, for instance--Well, when Pavlov, for instance, started before conditioning there was simply an unconditioned stimulus, the food in the mouth, and an unconditioned response, saliva.
所以当巴甫洛夫,例如,当巴甫洛夫,例如,在条件反射之前始时,只有一种无条件的激,嘴里的食物,和一种无条件的反应,唾液。