Printing with moveable type on paper dramatically reduced the cost of producing a book compared with the old-fashioned ones handwritten on vellum, which comes from sheepskin.

羊皮纸是用羊皮制作的，与在羊皮纸上手写的老式方法相比，在纸上进行活字印刷大大降低了生产书籍的成本。

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Printing with a moveable type on paper dramatically reduced the cost of producing a book compared with the old-fashioned ones handwritten on vellum, which comes from sheepskin.

羊皮纸是用羊皮制作的，与在羊皮纸上手写的传统方法相比，在纸上进行活字印刷大大降低了生产书籍的成本。

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To read a book cost me a month.

读一本书花了我一个月的时间。

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I think these extra pictures sometimes they're helpful, sometimes they just make the book cost a lot more.

我想这些补充的图片有时是有用的,有时仅仅是把书价抬高了一点

耶鲁公开课 - 基础物理课程节选

But then I ask them to think, and in the book I ask the readers to think: Well, have you given a cost of an expensive pair of shoes to save the life of one of the around 9 million children who are dying from poverty related causes each year around the world?

但是，接着我让他们思考，在书中，我让读者思考这样一个问题：,你有没有捐出过买一双鞋的钱,来拯救900万儿童中的一个生命？,他可能正因为贫困导致的种种问题,而生命垂危，每年世界上都会有这样的儿童？

普林斯顿公开课 - 人性课程节选

In fact, once you get beyond selecting the hotel, chances are it will cost you more to book it, or you will get less for the same price.

FORBES: Why You Need A Travel Agent, Part 2

In a nutshell, renting a textbook will cost about half of what it would cost to buy a new book.

FORBES: The Future of the College Bookstore

We approached our current publisher with the idea, but they were appalled by the cost of publishing a printed book with some 300 four-color illustrations.

FORBES: Why Visual Marketing is Important for Brands Today