知乎问答：想把自己的书籍扫描成PDF，什么样的扫描仪比较合适？ PDF
02020·7.378 MB·Chinese
Most books are stored in the elastic cloud where traffic is expensive. For this reason, we have a limit on daily download.
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Most books are stored in the elastic cloud where traffic is expensive. For this reason, we have a limit on daily download.
