On the Origin of Species

The benefits of the bilingual method with Line-by-line synced layout

Every line of the original has its translation directly beneath it, at the same height. You never lose your place: your eye drops one line and lands on exactly the sentence it just read. This is the layout that lets you open a book in a language you barely know without ever giving up, and compare the two texts almost word for word.

The excerpt shows the method using another book from the catalogue, not this one.