asternalWiktionary 原文英美构词拆解aa-前缀sternalsternal词干a-(no longer productive) Forming verbs with the sense away, up, on, out. · (no longer productive) Forming verbs with the sense of intensified action.词源说明From a- + sternal.释义形容词adjective1(anatomy, of ribs) Not sternal; that do not join the sternum.