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

词根词缀：vers-, vert-, -verse, -version, -version, -versation, -versal, -versary, -vert, vort-, vors-

【来源及含义】Latin: bend, turn

【相关词根词缀】 Inter-related cross references involving word units meaning "bend, curve, turn": diversi-; diverticul-; flect-, flex-; gyro-; meand-; -plex; streph-; stroph-; tors-; tropo-; verg-; volv-.

【同源单词】ad, adversaria, adversary, adversative, adversative, adversatively