應該翻過來問，多遠的距離，旋轉的飛刀正好刀鋒對著目標。這才是正確的練法。其中物理原理不是幾句話講清的。

來源: 信筆由墨於 2023-12-10 09:25:55 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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