Yesterday is a history. 是什么意思阿

Yesterday is a history. 是什么意思阿 Yesterday is history ,tomorrow is a mystery. 昨天已成历史 Yesterday is history.Yesterday is a history.哪句对? yesterday is history, tomorrow is mystery. today is a gift, yesterday is history tomorrow is mystery,tkday is a gift 英语翻译yesterday is a history tomorrow is a mistory today is a Yesterday is a history tomorrow is a mystery today is a wond Yesterday is a history.Tomorrow is a mystery.Today is a gift Yesterday is a history,tomorrow is a mystery,today is a gif yesterday is a history tomorrow is a mistory today is a pres Yesterday is a history,tomorrow is a mystery,today is a gift Yesterday is a history,Future is a mystery,Today is a presen