He developed the theory of classical conditioning by making a distinction between two sorts of conditioning, two sorts of stimulus response relationships.

他通过区分两种条件作用,两种刺激反应关系，提出了经典条件作用理论。

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And so classical conditioning should be the strongest when these two are simultaneous and the response to one is the same as the response to the other.

当无条件刺激与条件刺激同时出现时,经典条件作用的效果最强,两种刺激所引起的反应是相同的。

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