一旦你的生活中没有债务，花费就变得简单了，北卡罗来纳州夏洛特市，42岁的麦克.罗伯特说。
Once you commit to a debt-free life, the sacrifices get easier, says Michael Roberts, 42, of Charlotte, North Carolina.
研究人员在北卡罗来纳州夏洛特的社区内进行了调查。
Researchers surveyed communities in Charlotte, North Carolina.
通用动力装备技术产品公司位于北卡罗来纳州夏洛特市，主要为军工和商业提供广泛的系统解决方案。
General Dynamics Armament and Technical Products, located in Charlotte, N.C., provides a broad range of system solutions for military and commercial applications.
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