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alternative, blade, blue, clean, conservation, development, ecological, efficiency, electric, electricity, energy, environment, environmental, environmentally, equipment, field, friendly, generation, generator, global, industrial, industry, innovation, landscape, mill, objects, outdoors, park, plant, portugal, power, production, propeller, renewable, resource, rotation, save, saving, sky, station, supply, sustainability, sustainable, technology, turbine, turning, voltage, wind, windfarm, windmill,