求翻译：冷战后美国外交政策的演变，呈现出理想与现实相互交织、此消彼长的特点。实质上，美国是在维持自身全球主导地位的根本目标下，灵活运用两种外交理念，理想为手段，权力为目标，以此寻求短期国家利益与长远全球理想间的巧妙平衡。是什么意思？

Evolution of American foreign policy after the Cold War , showing the ideal and reality are intertwined, the shift characteristics.

After the Cold War foreign policy of the United States has evolved, the ideal and the reality are intertwined, and the features. In essence, the United States is to maintain its global dominance of the fundamental objective, and the flexibility in the use of the diplomatic philosophy, the ideal as a

After the cold war the US foreign policy evolution, presents the characteristic which the ideal and the reality interweave mutually, in inverse proportion.In the essence, US is at maintains own whole world dominant position under the basic goal, utilizes two diplomatic ideas nimbly, ideal is the met

The post-cold war United States foreign policy evolution, showing ideal and reality intertwine, the characteristics of this trade-off. In essence, the United States is to maintain its global dominance of fundamental objectives, flexible use of two foreign policy concept, ideal as a means of power as

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