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Keep going اختراعات واكتشافات 08 يناير 2016

المصعد الذي وصل به الأمر الآن إلى أن يحملنا إلى أعالي الأبراج المكونة من مئات الطوابق وبسرعة هائلة بدأ كغيره من الاختراعات بشكل بسيط جداً...

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