還有一個問題，其實也很有趣。直線。空間受重力影響是會塌陷的，光線也會扭曲。那麽直線呢？一條無限長的直線。。。有嗎？LOL

來源: 金筆於 2024-06-22 15:47:51 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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