不吸烟者速度更快，但在尼古丁的刺激下，主动吸烟者比强制不吸烟者快。

Non-smokers were faster, but under the stimulation of nicotine, active smokers were faster than deprived smokers.

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在社会历史方法的出现的刺激下，新一代的历史学家发现联邦主义者很有意思，因为他们表现出了联邦内部的弱点。

Spurred by the advent of social historical methods, a new generation of historians found Unionists interesting as manifestations of the Confederacy's internal weaknesses.

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例如，在去甲肾上腺素的刺激下，他们的心率加速得更快。

For instance, their heart rate shoots up more dramatically when stimulated by noradrenaline.

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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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So during those years, from 3 to 46, We believed that that part of his brain did not develop in the natural way, because it was deprived of the kind of stimuli to develop in the normal way.

因此，从他3岁到46岁的这些年里，我们认为这部分大脑,没有正常发育，因为没有正常情况下的那些刺激。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选