高尔基说:"书是人类进步的阶梯."的翻译：Gorky said: "the book is the ladder of progress of mankind." 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: "The book is the ladder of human progress."

Gorky said: "the book is the ladder of progress of mankind."

Gorky said that,The “book is which the humanity progresses steps and ladders.”

gorky said: " book is the ladder human progress".

Gorky said: "the book is the ladder of progress of mankind."