Permutations
n. （一组事物可能的一种）序列, 排列, 排列中的任一组数字或文字( permutation的复数形式 )
🗣️ 情景例句
to be with people--people his own age.
和别人交往像他那般年纪的人。
What lousy weather!
多糟的天气!
I have some difficulty in pronouncing some of the words in English.
我有些英语单词发音不好。