This raises the need for a global system of checks and balances, for mandatory rules and constraints in our dealings with nature.

这就需要建立一个全球性的检查和制衡体系，在我们与自然打交道时制定强制性的规则和约束。

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China will now be a full partner in the global trading system, and will have the right and responsibility to fashion and enforce the rules of open trade.

中国将成为全球贸易体系的正式伙伴，有权利和责任制定并执行开放贸易的规则。

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An expert system is a set of standard rules that, when combined with situational data, returns an "expert" opinion.

专家系统是一个标准规则集合，当与情境数据组合时，它返回一个“专家”意见。

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"The grand strategy of the U.S. since Harry Truman, " says Mr. Hill, has been the establishment of a rules-based system built on institutions like the U.N. and NATO.

WSJ: The Weekend Interview with Charles Hill: The Empire Strikes Back

And in any case, it has conditions of its own: the euro zone must have a proper means of enforcing fiscal rules and a better crisis-management system.

ECONOMIST: Charlemagne

As recently as 2006, the government drove through a reform of the pensions rules that simplified a notoriously complex system.

ECONOMIST: Tax