二战结束期间，在“雅尔塔体系”的基础上世界形成了两极对峙的格局。
Towards the end of WWII, a pattern of two polarities confronting each other was formed on the basis of Yaerta system.
1991年，苏联解体结束了美苏两极的战略均势，国际体系的结构发生了根本性的变化。
In 1991, the Soviet Union ended the bipolar US-Soviet strategic balance of power in the structure of the international system has undergone fundamental changes.
1991年，苏联解体结束了美苏两极的战略均势，国际体系的结构发生了根本性的变化。
In 1991, the Soviet Union ended the bipolar US-Soviet strategic balance of power in the structure of the international system has undergone fundamental changes.
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