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:ortho-, orth-
【来源及含义】Greek: right, straight, correct, true; designed to correct
【同源单词】anorthographic, anorthography, anorthopia, anorthosis, diorthosis, orthergasia