词根词缀:-enni-, -ennial, -ennium
【来源及含义】Latin: year, years
【同源单词】aere perennius, amillennialism, annual, biannual, bicentennial, biennia
词根词缀:-ism, -ismus
【来源及含义】Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait
【同源单词】abaptism, abolitionism, abortionism, abrakophilism, absenteeism, absolutism