Office work, typewriter, environmental sounds:
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Laser printer
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Typewriter, environmental sounds, Office work
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Turn off the hard drive, Turn on
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Photocopy (photocopy)
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Closing the laptop cover, Opening
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Turn off the old monitor, Turn on
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Sound signal of a bios computer, bios
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CD / DVD drive, disc read
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Room noise, read, Hard disk, write
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Insert the disk into the drive, read the
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General noise, Office work
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Communication room, computer noise
★★★★★