You're--and to put it in a crude way, you're teaching the dog that the bell goes with the food.

简单地说，你在让狗知道,铃声和食物是一起出现的。

耶鲁公开课 - 心理学导论课程节选

When Pavlov put food powder in the dog's mouth and saliva was generated, that's an unconditioned stimulus giving rise to an unconditioned response.

巴甫洛夫给狗喂食,狗会分泌唾液，这就是无条件刺激引起了无条件反应。

耶鲁公开课 - 心理学导论课程节选

What he would do is he'd put food powder in the dog's mouth to generate saliva.

他的做法是,给狗喂食，让狗分泌唾液。

耶鲁公开课 - 心理学导论课程节选