The scale of national debt risk mainly depends us the three indexes such rate of dependency, bearing rate and debt paying sate of national debt.

国债风险的大小主要通过国债依存度、国债负担率和国债偿债率三个指标来衡量。

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Over the past 18 months the possibility of national defaults has shattered the idea that all euro-area debt is equally risk-free in a particularly damaging way.

过去的18个月里呈现出的国家违约的可能性以一种特别有杀伤力的方式挫败了所有欧元区债券都是零风险的主张。

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What about Yen? National debt ratio of the gross national product is 192% or having greater risk.

日元？ 日本的国债对国民生产总值的比率是192%，风险更大。

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Federal Reserve Chairman Alan Greenspan, who highlighted another long-term risk to America's economic health: its skyrocketing national debt.

VOA: standard.2010.02.07

The magazine devoted its cover a year ago to the risk of rising local, state and national debt levels.

FORBES: What Crisis Commission Could Learn From Japan's Debt Bomb

The federal Financial Crisis Inquiry Commission in concluded in its final report two years ago that the 2007-2008 market upheaval, followed by national recession, came from a decade of "pervasive permissiveness" by regulators with expanding debt and high-risk behavior by home buyers and owners, mortgage lenders, investors and financial institutions that repackaged and resold that debt.

WSJ: NY attorney general looks at ratings agencies