词根词缀：infra-, infero-, infer-

【来源及含义】Latin: under, below, beneath

【同源单词】anteroinferior, inferior, inferiority, inferiorly, infernal, infernally

词根词缀：medio-, medi-

【来源及含义】Latin: middle

【同源单词】admedial, ante meridian, antemeridian, anteromedial, anteromedian, aurea mediocritas