The National Braille Press, an 83-year-old publishing house in Boston, printed the Harry Potter series on its Heidelberg cylinder; the final product was 56 volumes, each nearly a foot tall.
国家布莱叶出版社，一个位于波士顿拥有83年历史的出版社，将《哈利波特》全集印制在海德堡气缸（猜测是印制盲文书的某种机器）上；
Gross national product (GNP) is the market value of the output of final goods and services produced by the nation's economy.
国民生产总值(GNP)是国家经济所提供的制成品和劳务总量的市场价值。
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