see inside.

來源: 於 2021-06-27 21:50:40 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

 The 2 links are different. the first one is the youtube, but it turned out to be a PDF file?  I copied it and pasted it in a new web, and it is a youtube file, you can see it.