jayrunnerWiktionary 原文构词拆分jayrun词根/词干+-er后缀(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.也可拆分为jay词根/词干+runner词根/词干词源说明From jayrun + -er or jay + runner.释义（英文）名词 NounA pedestrian who violates pedestrian traffic regulations by rapidly crossing a street away from a designated crossing