The research result shows that advance force and stability ratio N are the main factors controlling …

研究表明，推进力和稳定比N是影响老隧道变形的主要因素。

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The jump in the ratio of broad money to GDP is also worrying, coming after a long period of stability.

在经历了长时间的稳定后，广义货币相对GDP比例的跃升也令人担忧。

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But this stability will be achieved at a debt-to-G.D.P. ratio of around 60 percent.

不过稳定后的国债和GDP比例将达到60%左右。

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Oil brought political stability and some social progress until the ratio of petrodollars to people turned against the country in the 1980s.

ECONOMIST: An unappetising choice | The