谷歌对美国顶尖研究图书馆进行深度挖掘，为它能得到的所有著作制作数字副本。
That makes an effort by Google, to burrow deep into the leading US research libraries to make digital copies of all the works it can lay its hands on, seem both ambitious and quixotic.
在模拟世界里，复制是困难和退化的(即副本复制件比原本越来越差)，而在数字世界中，复制是高效和完善的。
In the analogue world, copying was difficult and degenerative (ie copies of copies became progressively worse than the original). In the digital world, copying is effortless and perfect.
实际上，它们是我对我的WordNet数据库本地副本的查询返回的索引数字。
Actually, they are the index Numbers returned by my query to my local copy of the WordNet database.
Stricker就这项评论发表演说，微软放弃了制作数字图书副本而致力于收益更多的线上机会。
Stricker addressed this comment at Microsoft, which abandoned its efforts to make digital book copies to focus on more profitable online opportunities.
如果创建此文档的副本，该副本中不会包括任何数字签名。
If you create a copy of this document, the copy will not include any digital signatures.
如果创建此文档的副本，该副本中不会包括任何数字签名。
If you create a copy of this document, the copy will not include any digital signatures.
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