基本解釋再見(jiàn)（在電子郵件結(jié)尾與人道別時(shí)的說(shuō)法，ta-ta for now的縮寫(xiě)）。同根派生 ttfn相關(guān)詞英英字典劍橋英英字典 written abbreviation for ta-ta for now: a way of saying goodbye at the end of an emailttfn劍橋字典ttfn柯林斯字典