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[PBS访谈社会系列] PBS高端访谈:战争中的焚烧坑导致了老兵们的肺部疾病?
GWEN IFILL: Brain injury and post-traumatic stress disorder are two well-known signature wounds of the wars in Iraq and Afghanistan. But there is another injury, lung disease, that afflicts tens of ..2014-11-21 编辑：max
