And I haven't even bought a hardcopy textbook in a decade.

我都十年没买过纸质课本了。

A hardcopy one so you have it at home, your office, at school, library, wherever you're going to be so you can check it.

精装的词典，可以放在家里，办公室，学校，图书馆，任何你会去的地方， 你就可以用它来查单词。