Ключевые слова: airplane, aluminum, americans, berlin, building, center, culture, energy technologies, entrance, excursion, extensive, foundation, freight station, germany, glass, historical, history, kreuzberg, modern, museum, museum of technology, natural science, old, production techniques, propeller, raisin bomber, school classes, silver, steel, summer, technology, traffic techniques, trees, visit, warehouses, wheels, wings, world war,