The first is a numerical policy rule, such as a target for the debt ratio or, as in Chile, a pledge to run a budget surplus of 1% of GDP over the business cycle.

首先，要有一个量化的政策体系，例如债务目标比率，或像智利一样，在经济周期中把预算盈余设定为占gdp的1%。

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Gutierrez said tourism is an important business for the United States because the United States has a tourism surplus.

古铁雷斯说，旅游业对美国来说是一个重要的产业，因为美国在旅游业方面是顺差。

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In the process the company built up so much surplus computing power that it started a dirt cheap "computing in the cloud" business that changed the computing world.

在这一过程中，这家公司累积了过多的计算能量，于是推出了廉价的云计算业务，进而改变了计算力世界。

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Indeed Britain chalks up the world's biggest trade surplus in business services (see chart).

ECONOMIST: How Britain gains from offshoring

We think that this concern is overblown because of the large size and fragmentation of the commercial reverse supply chain segment, high barriers to entry for successful penetration into the market, and the incompatibility of an online surplus liquidation business with the aforementioned potential competitors.

FORBES: Students from the McIntire Investment Institute Make the Pitch for Liquidity Services

Despite the company's push to convince large retailers and computer makers to sell their surplus on Ebay, that business remains at only about 4% of Ebay's sales, the same as a year ago.

FORBES: Another Look