名词
中文翻译：苏维埃联盟
同义词：
['socialist union', 'communist union']
例句：
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1. The Soviet Union was the first country to establish a socialist system.
苏联是第一个建立社会主义制度的国家。
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2. After the collapse of the Soviet Union, many people were disillusioned with communism.
苏联解体后，许多人对共产主义失去了信心。
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3. The Soviet Union's economic policies had a significant impact on global trade.
苏联的经济政策对全球贸易产生了重大影响。