motormouthWiktionary 原文英美构词拆解motormotor词干mouthmouth词干词源说明From motor + mouth, from the figurative notion that the mouth moves so much that it seems motorized.释义名词noun1informalOne who talks very quickly or incessantly; a chatty or loquacious person.动词verb1intransitive, informalTo talk very quickly or incessantly.