Suitcase, cover open, close:
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Throw a backpack on the floor
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Plastic bag
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The noise of the refrigerator room
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Air dissection
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Trampoline (diving)
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Stop, Passenger elevator, movement
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Servo motor
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Opening, closing a cigarette case
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Opening, closing the umbrella
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Dance school, instructor, girls
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Elevator with hand doors, movement
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Laboratory experiment
★★★★★