词根词缀：-al, -ial, -eal

【来源及含义】Latin: suffix; pertaining to, like, of the kind of, relating to, characterized by, belonging to; action of, process of

【同源单词】abacterial, abdominal, abdominal adhesion, abdominal aorta, abdominal aortic aneurysm, abdominal aortography

词根词缀：extra-, extro-, extr-, exter-

【来源及含义】Latin: beyond, outside, on the outside, outward, external

【同源单词】Ab extra, ad extra, ad extremum, exteriorly, external, external reforming