You free up shelf space for new books (or for things other than books) and you get to keep the actual text itself, which you can access on a computer, tablet, e-reader, or smartphone.

你释放了家里的书架空间，可以买更多新书(或其他东西)，同时你还拥有那些书的电子档，可以通过电脑、平板、电子阅读器或智能手机随时阅读。

youdao

You free up shelf space for new books (or for things other than books) and you get to keep the actual text itself, which you can access on a computer, tablet, e-reader, or smartphone.

你释放了家里的书架空间，可以买更多新书(或其他东西)，同时你还拥有那些书的电子档，可以通过电脑、平板、电子阅读器或智能手机随时阅读。

youdao