你確定最早的是階梯金字塔嗎？那是教科書裏的說法。

來源: lily0824 於 2021-02-21 06:20:18 [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.