文章从势力均衡和战略利益的角度分析了第三个特点形成的原因。

The article analyses the reason for this character from the Angle of force balance and strategic interests.

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丹麦始终对其他国家保持中立，集中精力统一斯堪的纳维亚半岛，但条顿骑士团的出现，打破了波罗的海地区的势力均衡。

Denmark stands neutral to all nations at this time, as they focus on unifying Scandinavia under one flag. However, the Teutonic Order now threatens the balance of power in the Baltic Sea.

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李光耀说，美国保持突出的大国地位、完全摆脱近期经济困局符合世界的利益，因为那样它就可以帮助维持整个世界的势力均衡。

Lee said it was in the world's interests for the U. S. to remain a pre-eminent power and fully recover from its recent economic troubles, so that it can help preserve the balance of power world-wide.

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