Steam:
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Truck Air Brakes
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A stream of air breaks out of a metal pipe
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Cylinder pressure, air bleed, Air compressor
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Air flow
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Cut through the air with a gas burner
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Air release with a loud whistling creak,
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Soccer ball
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Inflating a mattress
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Air is blown through a glass tube
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Small compressor blowing air
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Oxygen balloon
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Steam
★★★★★