For 150 years, Braille books were designed to function as much as possible like print books.

150年来，布莱叶盲文书籍设计的功能尽可能做到与印刷图书相同。

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The nonprofit group provides Braille transcriptions as well as audio items for those unable to use print materials.

该非盈利组织提供了盲文的文字记录，以及为那些无法使用印刷材料的人们提供音频材料。

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It takes around 20 hours to transcribe, proofread and then print 69 pages of Braille.

抄写、校对、然后打印69页的盲文需要20小时。

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At first I thought it interesting mainly because of the technical challenges, as the relationship between print and braille is surprisingly complex and different for every language and type of notation under the sun, from Arabic to Zulu and from math to music.

WHITEHOUSE: Providing Literacy for Informed Citizenry through Braille | The White House

Internal Market Commissioner Michel Barnier was questioned by MEPs on 15 February 2012 on why the Commission had not signed up to an international treaty to make it legal for blind and visually impaired people to make braille or large-print copies of published books.

BBC: Access to books for blind people