Now that illiteracy is not so wide spread, people everywhere are free to enjoy great literature.
现在文盲不是很普遍,世界各地的人都可以很自由地欣赏文学作品。
To get a full appreciation of what this means we must turn first to some recent human inventions.
要透彻理解这句话的意义,我们应先回顾一下人类最近的几项发明。