名词
中文翻译：联邦
同义词：
['union', 'coalition', 'confederation例句：1. The union of the two countries has brought about significant economic benefits.（两国的联盟带来了显著的经济益处。）']
例句：
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1. The union of the two countries has brought about significant economic benefits.
两国的联盟带来了显著的经济益处。
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2. The coalition government has been working hard to improve public services.
这个联合政府一直在努力改善公共服务。
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3.The confederation of states is responsible for coordinating their policies.
各州联盟负责协调其政策。