Ключевые слова: 2021, alternative, blur, business, calendar, celebration, cell, city, cityscape, concept, conservation, decoration, eco, ecological, ecology, electrical, energy, environment, equipment, exterior, fog, grass, green, greeting, hand, handful, happy, haze, holding, holiday, idea, industry, innovation, mist, misty, nature, new year, outdoor, panel, pollute, pollution, power, renewable, skyscraper, solar, solution, sunlight, sustainable, technology, tower,