You can carry a whole library of hundreds of books with you, on CD, in a laptop, notebook or any ebook reader, without worrying about their weight.

你可以你能把整个图书馆数以百计的书存到CD里，便携式电脑了，笔记本里或者其他电子书阅读器里，不用担心重量问题。

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Many treatises and form books now come with forms on disk or CD-ROM.

许多专著和文体书都有配套的磁盘或是光盘。

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Find books that come with a CD either in bookstores or the library so your child can listen and follow along.

到书店或图书馆找一些带CD的书，以便孩子能听说和跟读。

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That kind of thing needn't be confined to PCs: You might order a book made up of six chapters on Russian stamps from six different books, or a CD with 12 tracks you specify, or a pair of pants cut to your measurements.

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