词根：-grad-, -gress-

【词根含义】：步,级

【词根来源】：来源于拉丁语名词gradus(步)和拉丁语动词gradior, gradi, gressus, sum(步行)。

【同源单词】：centigrade, degrade, downgrade, gradation, grade

前缀：tra-, trans-

【词根含义】：转变,转换;横过,越过

【词根来源】：来源于拉丁语trans。

【同源单词】：traversable, traverse, travesty, transact, transaction

词根词缀：grad-, -grade, -gred, -gree, -gress

【来源及含义】Latin: walk, step, take steps, move around; walking or stepping

【同源单词】ad eundem gradum, aggradation, aggression, aggressive, aggressively, aggressiveness

词根词缀：trans-, tran-, tra-

【来源及含义】Latin: across, through, over, beyond, on the far side of; most often used as a prefix

【相关描述】Don't confuse the tra- in this element with another tra- in "drag" or "draw". Trans- becomes tra- before the consonants -d, -j, -l, -m, -n, and -v.

【同源单词】acetyltransferase, allogenic transformation, allotransplantation, Amphora transformed into, autocholecystotransversecolostomy, autologous transfusion