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Translate an EPUB with a workflow designed for readability, desktop review, and a book result that stays useful afterward.

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From chapter headings to images, footnotes and text styles, the translation follows the structure and layout of the original. Read in a new language with a familiar reading experience.

Original · English

Calculus Made Easy

Chapter I

A little bit of. The sum of.

These dreadful symbols are:

(1) d which merely means “a little bit of.” Thus dx means a little bit of x; or du means a little bit of u. But you will find that these little bits (or elements) may be considered to be indefinitely small.

dx,du

(2) ∫ which is merely a long S, and may be called (if you like) “the sum of.” Thus ∫dx means the sum of all the little bits of x; or ∫dt means the sum of all the little bits of t.

∫dx,∫dt

The word “integral” simply means “the whole.” If you think of the duration of time for one hour, you may (if you like) think of it as cut up into 3600 little bits called seconds. The whole of the 3600 little bits added up together make one hour.

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Translation · European Spanish

El cálculo al alcance de todos

Capítulo I

Un poquito. La suma.

Estos temibles símbolos son:

(1) d, que solo significa «un poquito de». Así, dx es un poquito de x; du, un poquito de u. Pero verá que estos pequeños trozos (o elementos) pueden considerarse indefinidamente pequeños.

dx,du

(2) ∫, que no es más que una S alargada y puede llamarse, si lo desea, «la suma de». Así, ∫dx es la suma de todos los pequeños trozos de x; ∫dt, la de todos los de t.

∫dx,∫dt

La palabra «integral» significa simplemente «el todo». Puede imaginar una hora dividida en 3600 pequeños trozos llamados segundos. Todos esos 3600 trozos sumados forman una hora.

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A new language, the same familiar book. Keep the chapters, images and original layout, and carry on reading in your favorite reader.

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Download the desktop app to translate an EPUB book and review the result

The desktop app gives you a practical place to translate an EPUB book, inspect the result on a larger screen, and keep the translated file locally. That matters when the book is meant to keep being read after translation.

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Translate an EPUB book into something you can keep reading

If you already have the EPUB, what matters most is a translated version that stays readable, keeps its chapter structure, and remains useful afterward.

  1. Best for EPUB books you already have

    Especially useful when the book already exists as an EPUB and should be kept readable in another language.

  2. The result should still feel like a book

    A strong outcome is an EPUB that remains readable chapter by chapter and easy to return to later.

  3. Desktop review helps before you keep the translated book

    Many users want to inspect the translated EPUB before deciding it is their reading copy.

  4. Useful when the job starts from an EPUB you already have

    The important outcome is a translated EPUB you can review, save, and return to later instead of a generic text-only result.