Ключевые слова: bottle, colour image, day, dirty, environment, environmental conservation, environmental damage, environmentalist, flask, glass, gloves, hands, hardhat, holding, horizontal, inspector, lake, man, muddy, one person, outdoors, people, pollution, protective gloves, protective suit, protective workwear, quality, reservoir, river, sunlight, technician, wastewater, water, water conservation, water pollution, water sample, water surface, waters edge,