你对一本书，一项新发明，一部戏剧的观点在你内心是实际存在的。

The idea you have for a book, new invention, or play is real in your mind.

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《世界上最强大的念头：一个关于蒸汽、工业和发明的故事》一书的作者是威廉·罗森。

The Most Powerful Idea in the World: A Story of Steam, Industry, and Invention.By William Rosen.

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印刷术的发明之前，书非常罕见和昂贵的。

Before the invention of printing, books were very rare and expensive.

youdao

当他在找我时，碰巧发明确一本书。

As he was looking for me, he happened to find a book.

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他的发明成果有证明书。

There is a certificate for his invention.

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六书，最近发明的空气。

Six books, most recently Invention of Air.

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六书，最近发明的空气。

Six books, most recently Invention of Air.

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