Well, you show the thing that would cause you to have the fear without the unconditioned stimulus.

找出在非条件刺激不存在的情况下,能够使你感到恐惧的东西。

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When the conditioned stimulus and the unconditioned stimulus are brought together over and over and over again, pretty soon the conditioned stimulus gives rise to the response.

当条件刺激与非条件刺激,同时且多次反复出现，条件刺激很快也能引起条件反应。

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And it says the conditioned response may be different from the unconditioned response.

它还表明，条件反应,可能会与非条件反射有所不同。

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It predicts that the best timing is when the conditioned stimulus, which is the signal, comes before the unconditioned stimulus, which is what you have to prepare for.

它预测，最佳的时机,莫过于作为信号的条件刺激，出现在需要你做准备的，非条件刺激之前。

耶鲁公开课 - 心理学导论课程节选