Turn on, turn off the old monitor:
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Computer mouse movement
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Opening, closing the laptop cover
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Turn on, turn off the old computer
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Double click computer mouse
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Photocopy (photocopy)
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Shutting, Turning on the laptop, fan noise
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Environmental sounds, Office work, typewriter
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Jet printer
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Communication room, computer noise
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Computer simulated laser
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Repeatedly pressing a computer mouse
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Manual copy machine
★★★★★