Duolingo has the world's largest collection of language-learning data  to build unique systems, uncover new insights about the nature of language and learning, and apply existing theories at scales never before seen It's free, for real. Learn English, Chinese, Japanese, Korean, Spanish, French, German, Italian, Russian, Portuguese, Turkish, and many more languages, free . 34 hours of Duolingo are equivalent to a semester of university-level education completing bite-sized lessons, and track your progress with certificate achievements.


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