不能说郑和的航海技术先进于西方。郑和需要在海岸可视范围航行，而西人早在希腊罗马时代就可以远航了。

来源: borisg 于 2026-02-22 19:16:54 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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