Ключевые слова: and the sky, connectors, crude oil, derrick, diamonds, diesel, drilling, ecology, electric power, electrical, electronics, energy, environment, exploration, gasoline, generators, green, industry, infrastructure, natural gas, nod, oil equipment, oil industry, oil platform, oil pumping unit, oil rig, outline, panel, photovoltaic, pipeline, refining, renewable energy, solar energy, solar panels, sunsets, swing, technology, the sun, tube, turbine, wind energy,