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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Other core issues include governance and power sharing, economy, territory and security, citizenship, and European Union membership.

其它核心问题还有，治理方式、权力分配、经济、领土及安全、国籍和欧盟会籍等等。

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Nobody rose to power in the Soviet Union despite the system.

在苏联，不是这种人就无法取得权力。

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He said it was an administration of enemies of the Union who used the president's name and power for their own purposes.

VOA: special.2009.04.16

He gave military officers the power to arrest civilians believed to be hostile to the Union.

VOA: special.2009.08.20

A U.S.-backed Ethiopian invasion in 2006 ousted the Islamic Courts Union from power, pushing al-Shabab deep into southern Somalia.

VOA: standard.2009.09.16

The Cook memo is damning proof that the main goal of union leaders is to enhance the power of union leaders, not of workers.

WSJ: Review & Outlook: Michigan Union Tell-All

Both nationally and locally, union power has eroded as non-union employers offer bonuses to newly hired workers, and thick wage-and-benefits packages to retain them.

ECONOMIST: Minnesota��s job market

However the union is divided into factions and many expect to see a power struggle as union barons jostle for control.

BBC: Mexico union replaces Elba Esther Gordillo