federation [ˌfedəˈreɪʃn]
 
 
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基本释义
n.同盟,联邦,联合,联盟,联合会
英英释义
a group of organizations , countries , regions , etc . that have joined together to form a larger organization or government
参考例句
It is a federation of 10 regional unions. 它是由十个地方工会结合成的联合会。
Mr. Putin was inaugurated as the President of the Russian Federation. 普京正式就任俄罗斯联邦总统。
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