他们特别发行了一套纪念邮票。
皇家邮政特别发行了一套纪念邮票。
The Royal Mail issued a special set of stamps to mark the occasion.
我要买一套纪念邮票。
乌拉圭22日发行一套北京奥运主题纪念邮票。
Uruguay issued a set of Beijing Olympics-themed postal stamps Tuesday.
希腊在第一届奥运会上发行了世界上第一套奥林匹克纪念邮票，共12枚。
Greece issued the first set of Olympic commemorative stamps in the 1st Olympic games. There are 12 in a set.
世界上第一套奥林匹克纪念邮票哪个国家发行，共几枚？
In which country was the Olympic commemorative stamps issued? And how many stamps in a set?
世界上第一套奥林匹克纪念邮票哪个国家发行，共几枚？
In which country was the Olympic commemorative stamps issued? And how many stamps in a set?
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