小牛看见狗就会由于恐惧开始乱跑。

On seeing the dog, the calf began to run out of fear.

youdao

当我开始考虑让我从一种生活过渡到另一种生活所必须做出的改变时，我内心的恐惧开始增多。

When I started thinking about the changes that would need to happen in order for me to transition from one life to the other, the fears within me started to multiply. I thought about things like.

youdao

如果你能客观的评估抛开恐惧后你所得到的好处，你会发现你的恐惧开始成为机遇而成长。

If you can objectively appraise the advantages to moving past your fear, you may come to see your fear as an opportunity to grow.

youdao

But the presence of the dog there is a conditioned stimulus and so you grew to be afraid of dogs.

而这时狗的存在就变成了条件刺激,所以你开始对狗心生恐惧。

耶鲁公开课 - 心理学导论课程节选