科学家已经发现，如果给一组老鼠注射安非他命，它们会发疯地乱跑10分钟，然后死掉。

Scientists have discovered that if they give amphetamines to a group of mice they will run wildly around in circles for 10 minutes and then drop dead.

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咖啡能够通过多种作用刺激你的中枢神经系统，就像其他的药物一样(比如安非他命)让你清醒，增强活力。

Caffeine is a central nervous system stimulant that ACTS in many ways like other stimulant drugs such as amphetamines, waking you up and increasing your muscular activity.

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这些药包含了安非他命，镇静剂和其他化学成分的混合物，它们在美国是违法的，但在黑市上流通。

The pills, which contain a mix of speed, tranquilizers and other chemicals, are illegal in the U. S. but sold on the black market.

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In particular, they increase the amount of norepinephrine, a neurotransmitter that's responsible for just general arousal.

具体来说,安非他命会引起,去甲肾上腺素释放量的增加,去甲肾上腺素,是种负责一般性唤醒的神经递质

耶鲁公开课 - 心理学导论课程节选

And so, amphetamines include drugs like "Speed" and "Coke."

安非他命类药物包括了,"快快"和"可口"

耶鲁公开课 - 心理学导论课程节选

Amphetamines increase the amount of arousal.

安非他命可以增强唤醒的程度

耶鲁公开课 - 心理学导论课程节选