Helium balloon:
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Truck Air Brakes
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Suction action of air
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Air compressor operation
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Balloon inflating
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Oxygen balloon
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Mask breathing
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Cut through the air with a gas burner
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Air pressure
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Air broom, Blower
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A stream of air breaks out of a metal pipe
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Air release with a loud whistling creak,
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The work of oxygen equipment, the release of
★★★★★