李約瑟如果在16xx年代到不丹親自見過兩百年前修建的鐵索橋，就不會犯他說的那種錯誤。

來源: 咲媱於 2026-02-02 07:02:03 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.