From Ebook Friendly:
I was disappointed when Google launched the ebookstore back in December 2010. The iOS app suffered early-stage errors, but most of all the store was only available in the United States.
There is, however, a single feature that makes the Google reading ecosystem extremely useful for non-English users like me: instant translation.
. . . .
[G]etting a translation in Google Play Books, works like a charm. You can tap on a word, or even select a passage, and tap on Translate in the pop-up window. You’ll set up language-to-language translation flow and you’re ready to read even the most difficult book.
What’s more, the translation works both in the mobile apps (iOS, Android) and in a web browser. The latter one may become a rather handy way to work with foreign language documents.
Some people are fine with a dictionary, but getting a meaning is not enough for me. I want to know the closest Polish translation to the English word.
Link to the rest at Ebook Friendly