4 1/2 怎寫才對 ? (1) 4 x 2 + 1 = 9/2
(2) 2 x 4 + 1 = 9/2
收錄日期: 2021-04-23 14:47:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080331000051KK00986