Find the unknowns.
圖片參考:http://imgcld.yimg.com/8/n/HA00101881/o/701204070044813873390382.jpg
收錄日期: 2021-04-13 18:36:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120407000051KK00448