Communication room, computer noise:
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Shutting, fan noise, Turning on the laptop
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Office work, general noise
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Removed, The USB flash drive is inserted
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Manual copy machine
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Closing the laptop cover, Opening
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Computer simulated laser
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Turn on, turn off the old monitor
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Computer interface, alarm
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Pressing a keypad, input error sound
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Floppy disk reading
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Computer noise, Communication room
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Read, write, room noise, Hard disk
★★★★★