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• v  bend over or curl up, usually with laughter or pain

• double
• double up

News & Articles

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• World aircraft fleet to double over next 20 years, Boeing predicts
  Boeing projects the world aircraft fleet will double over the next 20 years, according to the company’s annual Current Market Outlook. Boeing predicts a demand for more than 35,000 new airplanes over the next two decades valued at $4.8 trillion.
  June 11, 2013 - Air Cargo World