Ключевые слова: activity, adult, blue, building, bulldozer, closeup, computer, construction industry, construction machinery, construction site, control, danger, earth mover, engineer, engineering, equipment, factory, forest, fuel and power generation, futuristic, green color, industry, land vehicle, lens, looking, machine part, machinery, macro, men, metal, mining, nature, occupation, one person, optical instrument, outdoors, professional occupation, robot, robotic arm, science, steel, summer, technology, toy, transportation, work helmet, work tool, working, yellow,