The best way to learn english is reading english literature. But the main problem while reading foreign literature is unknown words in the text. In the app "Smart Book" you can easy translate them by one touch. Also, while translation , you not always understand context or some speech turnover perfectly well.The app gives opportunity to see the author's translation of any paragraph by one touch. The parallel text is easy read and translate. Any unknown word you can add in the built-in dictionary to repeat. Also, you can download any book in the format fb2. Fb2 reader open any English book, and you can translate it as well as the built-in ones.