start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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melt - melted - melted/molten
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start learning
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start learning
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start learning
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start learning
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zanieczyszczenie powietrza start learning
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start learning
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start learning
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start learning
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start learning
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rzeka wystapila z brzegow start learning
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the river burst its banks
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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promieniowanie ultra fioletowe start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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wytwarzać dwutlenek węgla start learning
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start learning
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przenikać przez atmosfere start learning
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pass through the atmosphere
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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czysta energia elektryczna start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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