高尔基说过:"书籍是人类进步的阶梯."的翻译：Gorky said: "books are the ladder of progress." 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Gorky said: "Books are humanity's progress."

Gorky said: "books are the ladder of progress."

Gorky has said: The “books are which the humanity progresses steps and ladders.”

gorky said: "Books are the ladder for the progress mankind".

Gorky said: "books are the ladder of progress."