很多東西，有多個獨立發明。馬車這東西，不複雜，為啥中國不能發明呢？況且當時交通不便，和波斯人怎麽交流？

來源: 衡山老道於 2025-08-02 16:41:04 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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