是打仗的需求不強烈。如果很強烈，商人就自動會去鼓勵研究槍炮，火藥，船隻的技術，就會有大發展。

來源: f2022f 於 2026-02-22 17:36:01 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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