二十三;
例句:
I read a note my grandma wrote back in nineteen twenty-three.
我读到奶奶留下的一张字条,写在遥远的一九二三年.
Twenty-three people were burned to death in a hotel fire.
在一场旅馆大火中有23人被烧死.
I'd say yor're about twenty-three.
我猜你可能23岁.