第二十三;
例句:
Do I go up to No. twenty-third gate?
我要去二十三号门 吗 ?
Our boardroom is up on the twenty-third floor.
我们会议室在最高层, 二十三 层.
So the twenty-third to the twenty-fifth of December.
那就是从十二月二十三日到 二十五日.