A set of24 or sometimes25 sheets of paper of the same size and stock; one twentieth of a ream.
纸的一刀一套24张或有时25张同样尺寸和种类的纸张; 一令纸的十二分之一
David and I are going to be married on Friday morning, June the twentieth.
我和戴维已定于6月20日(星期五)上午结婚。
That's the twentieth goal he's kicked this season.
这是他本赛季踢进的第二十个球.