Universal Postal Union

基本解释

Japan is a member to the Universal Postal Union.
日本是万国邮政联盟的成员（国）。
《新英汉大辞典》
The Universal Postal Union will allow the country’s new postage stamps (eagerly awaited by philatelists) to convey letters abroad.
万国邮政联盟使得该国的新邮票（集邮家们可热切期待着呢）将信件送往国外。
International postal service requires membership of the Universal Postal Union, which for non-members of the UN need approval by at least two-thirds of that body’s members.
要开展国际邮递服务必须要加入万国邮政联盟，而非联合国成员国则需要获得该联盟超过三分之二的赞成比例方可加入。

The Universal Postal Union will allow the country's new postage stamps (eagerly awaited by philatelists) to convey letters abroad.
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Worldwide mail volumes are expected to grow less than 1% a year through 2008, says the Universal Postal Union, which oversees the globe's flow of mail.
FORBES: Delivery Problems