There is no need to define the word "castle". And this is the advantage of locks - everyone, from the mayor to the ordinary housewife, knows what locks...

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Increasingly, vending machines are encountered and become popular in our lives. Such self-service devices are installed in shops, supermarkets, offices, shopping centers and salons. What is vending? This...

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Hair loss in humans is a completely natural phenomenon. This phenomenon happens to all people without exception, it's just that old cells periodically change to new ones in...

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