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Ecologist sampling water from river with test tube glass and have white smoke, Biologist collects sample waste water from industrial of toxic chemicals, scientist environmentalist, problem environment
Ecologists sample water contaminated with dangerous, waterhazard toxins into tubes, Scientist or Biologist in protective waste water from industrial for analyze, problem environment, Testing toxic.
Ecologists sample water contaminated with dangerous, waterhazard toxins into tubes, Scientist or Biologist in protective waste water from industrial for analyze, problem environment, Testing toxic.
Ecologist sampling water from the river with test tube, Scientist or Biologist in a protective suit and protect mask collects sample of waste water from industrial for analyze, problem environment
Ecologists sample water contaminated with dangerous, waterhazard toxins into tubes, Scientist or Biologist in protective waste water from industrial for analyze, problem environment, Testing toxic.
Team of Scientists in protective suits or Biologist collect sample of dirty water smelly and toxic water from factory  took a sample of waste water for analysis. Pollution and environment problems
Ecologist sampling water from the river with test tube, Scientist or Biologist in a protective suit and protect mask collects sample of waste water from industrial for analyze, problem environment

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1090478617
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素材 影片 編號: 1090478617

Team of Scientists in protective suits or Biologist collect sample of dirty water smelly and toxic water from factory took a sample of waste water for analysis. Pollution and environment problems

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