Ключевые слова: activity, blue, built, business, city, clear, construction, contemporary, crane, delivering, design, development, engineering, equipment, exterior, frame, growth, heavy, high, house, housing, industry, job, large, loading, machine, machinery, metal, occupation, overhead, plan, project, safety, scene, security, silhouette, site, sky, steel, structure, tall, technology, tower, traffic, urban, working,