在移向身後的傳送步帶上，要加倍努力地走，才能往前不後退。等走到往前移動的步帶上，不動也能前進。

來源: 守月於 2023-05-07 07:08:30 [舊帖] [給我悄悄話] 本文已被閱讀：次

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