High-frequency squeak, hum:
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Makes sounds, The robot moves
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Opening, closing doors, Passenger elevator
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Closing doors,, Freight elevator, opening
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Plate (fx)
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Item falls on concrete
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Whip pillow
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Board falls
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Crashing,, Trash falling, metal rattle
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Tinder brush surface
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Breaking a wood-glass product
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Throw an old bike to the ground
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Elevator with hand doors, movement
★★★★★