Очень полезный дрон изобрели школьники из Добринки
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![Брюшная аорта – ключ к решению проблем с ногами. [Шишова О.И.]](https://sun9-44.userapi.com/GKJMX_AXo7Jd-5hGz75bCay3IBECFzcTewYa_Q/jpI_EJE__Ns.jpg)
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