Ключевые слова: arm, autumn, backhoe, bucket, civil engineering, construction, construction machinery, construction site, digger, digging, dredging, embankment, engineering, excavator, heavy, heavy machinery, hydraulic, hydraulic excavator, hyogo prefecture, industry, japan, lake, landscape, machine, machinery, muko river, operation, operator, outdoor, park, pond, reflection, river, riverbank, riverbed, sand, scoop, shovel, soil, special vehicle, sunny, vehicle, water surface, wood, work, yellow,