Laboratory experiment:
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Buzzer, signal in the game
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Chemistry, boiling liquid, burner
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Throw the item in the trash.
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Rack destruction, Trash falling
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Beats fastening, The flag flaps in the wind
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Scratch
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Sand bag
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Chemistry, Bunsen Burner
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Trampoline (diving)
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Wooden whistle
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Umbrella opening
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Closing doors, Passenger elevator, opening
★★★★★