SEO: If you translate the text into other languages, can it cause search filter in Google for duplicate content?

Very good question. My short answer - no. The same article in English will be very different if it is translated into French.

In case one, the English text is similar to other text in English, then in theory it may cause a site filtration by Google SE robots for duplicate content.

But if the same article is published in English and French, for the search engines two texts are different. By itself, the publication of an article in English and French is not the cause to apply search filter.

But there is one point that you need to know.

If you have written an article in English or French and translated it, everything will be fine.

But if you make an automatic translation of the English version of your website into other languages ​​using Google Translator, it can already be considered as spam because of the fact that these texts are auto generated. In this case the person does not check the article and does not make corrections.

My advice - if you need to provide content for your international users, say, in three languages, make sure that for each country you have a high-quality texts that are normally read. Do not make a 38-40 language versions of your web-site just because you can do the translation automatically.

Despite the fact that Google Translator, and other services are constantly improving and getting better every year, there is a big difference in quality between the translation of the text from person who's fluent in the language, and machine translation.

You can make such a summary. Human Translation and publication of articles from one language to another (eg, from English to French) do not bear any ill effects. But I don't recommend automatic translation of the site into many other languages.

Instead, you should focus the efforts on making high-quality translations and texts that were available to search engines. If your web-site contains automatically translated articles then close them from indexing via robots.txt file after add translated texts.

I hope my answers will help you.