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• r  moving from one place to another and back again

• back and forth
• backward and forward

News & Articles

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• Gazette.Net: Got gear? Police cars outfitted for speed and needs
  The car has a big, black snout, flowing through a compact midbody, low-slung windows and a squared-off tail. We see them everywhere, zooming to and fro, responding to emergencies.
  June 27, 2013 - Frederick Gazette