a molecule containing one amine group (especially one that is a neurotransmitter)
monoamine详细解释
mon.o.am.ine n.（名词）An amine compound containing one amino group, especially a compound that functions as a neurotransmitter.一元胺：只含有一个胺原子团的胺化合物，尤指作用于神经传递素的化合物
