我覺得中國算盤和古羅馬的線串的珠子，定義完全一樣，但是中國更好攜帶，撥珠子的速度更快

來源: 哪一枝杏花於 2026-04-25 20:27:02 [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.