Double click computer mouse:
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Franking machine
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Turn off the old monitor, Turn on
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Computer mouse movement
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Old computer keyboard
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Shutting, Turning on the computer, fan noise
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Room noise, Hard disk, write, read
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Computer simulated laser
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Turn on, turn off the hard drive
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Computer mouse click
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Turn on, turn off the old computer
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Laser printer
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Photocopy (photocopy)
★★★★★