词根词缀：per-

【来源及含义】Latin: through, across, over; beyond, by means of

【同源单词】Ad astra per aspera, Ad augusta per angust, Ad perpetuam rei memoriam, Ad virtutem per sapientiam, ampersand, antiperspirant

词根词缀：us-, ut-

【来源及含义】Latin: use, employ, practice

【同源单词】Ab abusu ad usum non valet consequentia, abuse, abuse, abuse, abusive, abusively