词根词缀：ann-, anni-, annu-

【来源及含义】Latin: year, yearly

【同源单词】annalist, annals, anniversary, anno Domini, anno mundi, annual

词根词缀：subter-

【来源及含义】Latin: under, beneath, secretly, less than; formed from sub-

【同源单词】subterannuating, subterannuation, subterfuge, subterraneal, subterranean, subterraneous