Ключевые слова: aerial, collect, collecting, construction, dig, digging, dirt, dirty, dredger, drone, dump, dumper, environment, excavate, excavating, excavation, filling, float, floating, flowing, gravel, gravel pits, ground, heavy, industrial, load, loader, loading, lorry, machine, machinery, mechanic, mine, muddy, nature, pebbles, river, sand, scooping, separation, shoveling, soil, technology, trailer, transport, transportation, truck, water, worker,