Ключевые слова: air, america, animal, blue, business, businessman, chemical industry, clouds, communication, concept, dear, development, digital, earth, ecology, economy, environment, environmental protection, europe, friendly, fuel, future, gasoline, global, globe, hand, heart, hold, holidays, ideas, man, map, natures, network, ocean, past, people, planet, power, protection, save, sea, solar panel, sustainability, symbol, technology, world,