前缀：extra-, extro-

【词根含义】：出,向外;超越

【词根来源】：来源于拉丁语extra(出,向外)。

【同源单词】：extrasolar, extravagant, extravaganza, extrovert

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