下麵是我在本文的英文版貼出的地方加的提示，同樣適用於這裏：

來源: 慕容青草於 2022-03-30 08:03:44 [檔案] [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次 (541 bytes)

回答: 光速悖論由慕容青草於 2022-03-28 13:42:27

A courtesy reminder I have been often surprised by how poorly professionals read very short essays....so as a courtesy reminder for anyone who would come to comment: Please answer the question whether the laser beam would hit the hole and the beam A or B at the same time as a proof that you do have the ability to understand this short essay.....