To date most countries have not yet raised tariffs to bound levels or taken full advantage of headroom on agricultural subsidies.

截至目前，大多数国家尚未把关税提高到约束水平，也尚未充分利用农产品补贴的余量。

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In fact, US rates should remain range-bound at historically low levels for an extended period.

事实上，美国的利率应当会在较长时期内保持在历史低位窄幅波动。

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The machine analyzed the samples using nuclear magnetic resonance-measuring levels of the antibody-bound proteins based on their magnetic properties.

这个分析样品的机器使用了核磁共振——测量基于磁原理的抗体结合蛋白级数。

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U.K. consumers, who have some of the highest personal debt levels in Europe, are bound to start watching their spending more closely this year, and many economists expect interest rates and taxes will gradually start to rise, which will crimp spending further.

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Mars-bound pioneers will be exposed to radiation levels that could effectively retire astronauts under NASA's current standards, scientists reported Thursday.

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Nonetheless, crude is still at price levels that are significantly higher than historical averages, suggesting that exploration and production companies are bound to get plentiful new contracts to drill for oil and natural gas.

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