And what an agonist does is increases the effect of neurotransmitters, either by making more neurotransmitters or stopping the cleanup of neurotransmitters, or in some cases by faking a neurotransmitter, by mimicking its effects.

兴奋剂会增加神经递质的作用效果,有可能是通过释放更多的神经递质而实现,也可能是通过阻止神经递质的排出而实现,也有时候是通过伪造神经递质,通过模仿神经递质的效果来实现的

耶鲁公开课 - 心理学导论课程节选