它们并没有被数字化，因此这些资料将永远丢失。
They were not digitized so the information was lost forever.
数字图书馆是将图书、文献资料数字化后通过互联网成为网上资源，为全球提供服务，成为全球性的虚拟图书馆。
The digital library is a worldwide virtual library, which digitalizes books and documents and supplies the sources through internet.
数字图书馆是利用现代计算机技术将图书馆资料信息数字化。
Digital libraries use current modern technology to digitize the information material.
数字图书馆是利用现代计算机技术将图书馆资料信息数字化。
Digital libraries use current modern technology to digitize the information material.
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