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下載PPT最後一頁的文件，得到「don'tforgetme.txt.png」，去除「.png」後打開，在文件最下方找到：

1IBE18467GD
=A925RDFG74
=820201619://232323.1612211811.31513/16/15I126322

其中「1IBE18467GD=A925RDFG74」提示數字為英文字母，開始對照第三行疑似網址的東西，得到一串偷偷說網址：https://www.plurk.com/p/o9lfcv

詳細拆分，可自行對照：
8 20 20 16 19://23 23 23.16 12 21 18 11.3 15 13/16/15 I 12 6 3 22

------------------------------

依照圖片提示，將偷偷說內容用凱撒密碼位移6次，得到紀伯倫《先知》中的《論時間》，以下為網路上找到的譯文。

You would measure time the measureless and the immeasurable.
你要測量那不可測量，不能量的時間。

You would adjust your conduct and even direct the course of your spirit according to hours and seasons.
你要按照時長與季候，來調適你的舉止，引導你的精神。

Of time you would make a stream upon whose bank you would sit and watch its flowing.
你要把時光當作一條水，你要坐在岸旁，看他流逝。

Yet the timeless in you is aware of life's timelessness,
但那在你裡面無時間性的“我”，卻覺悟到生命的無窮。

And knows that yesterday is but today's memory and tomorrow is today's dream.
也知道昨日只是今日的回憶，而明日只是今日的夢想。

And that that which sings and contemplates in you is still dwelling within the bounds of that first moment which scattered the stars into space.
那在你裡面歌唱著，默想著的，是仍住在那第一刻在太空散步群星的圈子裡。

Who among you does not feel that his power to love is boundless?
你們中間誰不覺得他的愛的能力是無窮的呢？

And yet who does not feel that very love, though boundless, encompassed within the center of his being, and moving not from love thought to love thought, nor from love deeds to other love deeds?
又有誰不覺得那愛，雖是無窮，卻是在他本身的中心繞行，不是從這愛的思念，移到那愛的思念，也不從這愛的行為移到那愛的行為麼？

And is not time even as love is, undivided and spaceless?
而且時光豈不也像愛，是不可分析，沒有罅隙的麼？

But if in your thought you must measure time into seasons, let each season encircle all the other seasons,
但若在你的意想裡，你定要把時光分成季候，那就讓一個季候繞圍住其餘的季候。

And let today embrace the past with remembrance and the future with longing.
也讓今日的回憶擁抱著過去，用希望擁抱著未來。

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【參考網址】

字母表對照　https://www.ifreesite.com/abc/abc.htm
凱撒密碼轉換　https://www.qqxiuzi.cn/bianma/kaisamima.php
《論時間》譯文　https://www.jianshu.com/p/f848b4692c7e