如果雅典有煤鐵，有人發明了蒸汽機，用來榨橄欖油比用奴隸便宜，就會迅速普及，然後蒸汽船取代帆船，大航海更容易。

來源: rulvbobing 於 2025-12-21 12:51:22 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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