a square matrix of n rows and columns; cells contain n different symbols so arranged that no symbol occurs more than once in any row or column
双语例句
The history of Magic or Latin squares dates back thousands of years, to the pyramids of ancient Egypt, and possibly even further back to the first Chinese dynasties. 历史上的魔术或拉丁方可以追溯到几千年前，以金字塔的古埃及，甚至可能进一步回第一中国朝代。
