neurotransmitter

All drugs of abuse stimulate the release of the neurotransmitter dopamine..所有的药物滥用都刺激了神经递质多巴胺的释放。

Dopamine is a neurotransmitter critical to the experience of pleasure and desire, and sends a signal to the brain: Pay attention, this is important..多巴胺是一种神经递质，对于人感受快乐和欲望至关重要，而且会向大脑发送这样一个信号：注意了，这很重要。

The nucleus accumbens is associated with other kinds of longing — for alcohol and drugs — and is more dense in the neurotransmitter dopamine than in serotonin..阿肯柏氏核还与其他种类的渴望（比如嗜酒，嗑药）相联系---而且在血清素里神经传递素多巴胺的浓度更高。