8: 將加數寫成計算器中的數字，兩個加數迭在一起，就得到和。

來源: 雲霧山中於 2010-05-07 07:24:53 [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.