Air flow:
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Helium balloon
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Wind tunnel ventilation
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Truck Air Brakes
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Soccer ball
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Fighting the fire with blacksmith furs
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Cylinder pressure, Air compressor, air bleed
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Cut through the air with a gas burner
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Steam
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Rope torsion
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The release of, The work of oxygen equipment
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Air compressor operation
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Suction action of air
★★★★★