High-frequency squeak, hum:
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The noise of the great hall
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Stir the liquid in a beaker, Chemistry
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Fishing torsion reels
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Bone breaking
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Spinning spinning, Fishing
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Airport Luggage Transport Belt
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Cork in the sink, bath
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Wooden whistle
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Closing doors,, Freight elevator, opening
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Cut the air with a whip
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The sound of the bomb timer
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Air conditioning,, The noise of the room
★★★★★