For a while, U.S. power was checked by the Soviet Union, but since the end of the Cold War, America has been the sole superpower.

有一段时间，美国的力量曾遭到苏联的制衡，但自从冷战结束之后，美国已经成为单极世界的唯一超级大国。

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Rising China may threaten America's future as sole superpower, but the two countries' economies are interlocked and both need good relations.

崛起中的中国也许是唯一可能威胁到美国的力量，但两国经济互相依存，需要维持良性合作。

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The US can expect to be the sole superpower for some time yet, if we mean by the term a state capable of deploying effective power almost anywhere in the world.

美国仍可以指望在一段时间内作为唯一的超级强权，如果我们衡量的条件是一个国家是否能在几乎全世界各地都部署有效力量。

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It is tempting to compare the present era with the 19th century, when Britain was the sole superpower.

ECONOMIST: Quid pro quo

Despite the court's repeated assurances, American congressmen and officials feared that the world's sole superpower would become the target of politically-motivated prosecutions.

ECONOMIST: International Criminal Court

And Mr Hussein, however badly he misjudges world opinion, retains a bizarre charisma in much of the Arab world for his dogged defiance of the world's sole superpower.

ECONOMIST: Let��s be diplomatic, say the neighbours