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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:tri-, tre-

【来源及含义】Greek > Latin: a numerical prefix meaning, three, thrice, threefold; triple; a word element for number 3

【相关词根词缀】 Cross references of word families that are related, partially or totally, to: "three, third": terce-; terti-; trigono-; trito-.

【同源单词】ternary, treble, trebly, triacid, triact, triad