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：post-

【词根含义】：后;次

【词根来源】：来源于拉丁语post。

【同源单词】：postgraduate, posthumous, postmeridian, postpone, postscript

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：post-

【来源及含义】Latin: after, behind, later, subsequent

【同源单词】a posteriori, anemic necrosis, Anno post Romam conditam, anteroposterior, Culpam maiorum posteri luunt, dorsoposterior