| 单词 | number of items |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔alternating group〕A group consisting of all possible even permutations of a given number of items.交代群：由已知各项数的所有可能偶数排列所构成的群美国传统〔permit〕When we arrived at customs we realized we had more than the permitted number of items.我们到了海关才意识到携带物品过多。韦氏高阶〔symmetric group〕A group consisting of all possible permutations of a given number of items.对称群：由某些给定数量的项的所有可能的排列组成的一组美国传统 |
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