词根词缀：-fer, -ferous

【来源及含义】Latin: to bear, to carry; to produce; to bring

【相关词根词缀】 Cross references of word families related to "bear, carry, bring": duc-; ger-; later-, -lation; phoro-; port-.

【同源单词】ad referendum, afferent, aquifer, auriferous, circumference, confer

词根词缀：ob-1

【来源及含义】Latin: toward, to, before

【相关描述】Before c, ob- becomes oc-; before f, ob- becomes of-; before g, ob- becomes og-; before p, ob- becomes op-; before m, ob- becomes o-

【同源单词】oblige, obsequious, obstetrics, obverse, obvert, offer