And if it can't quite muster the heft to do that alone, Moscow is increasingly allying with other nations to challenge America's global hegemony.

如果她发现一个人分量不够，莫斯科就会日益团结其他国家来挑战美国的全球霸权。

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And perhaps Facebook is the best to challenge the Apple hegemony over the online music world.

也许Facebook是最有可能挑战苹果公司在在线音乐市场上的统治地位。

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