for why you became afraid of dogs is that one day a dog came up and he was a neutral stimulus.

你之所以害怕狗,是因为，某天有只狗向你跑来,狗是一个中性刺激。

耶鲁公开课 - 心理学导论课程节选

If I were you, I wouldn't touch that dog.

如果我是你，我不会碰那只狗。

If I were 课堂 - SpeakingMax英语口语达人

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

And so, he has put this chemistry to use in this robotic arm and they call it Fido, because often dogs are the creatures that have to go out and detect these things, and it's not a great job if you're a dog to be sent out to see whether there was an explosive and discover yes, there was, a little bit too late.

因为通常都是派狗去检查这些东西,这个不是个好工作，如果你是一只狗,被派去检查是否有爆炸物，然后你发现有,那就来不及了,所以用机器手检查化学物质。

麻省理工公开课 - 化学原理课程节选