原文在哪裏？理論歸理論，紙上談兵，“唯一能夠同時解決這三個問題的方案”是什麽，實效性？

來源: pickshell 於 2019-04-07 18:11:29 [舊帖] [給我悄悄話] 本文已被閱讀：次

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