a set of commemorative stamps

• 一套纪念邮票

a set of commemorative stamps的用法和样例：

例句

1. I shall buy some sets of commemorative stamps.
   我要去买几套纪念邮票。
2. The Royal Mail issued a special set of stamps to mark the occasion.
   皇家邮政特别发行了一套纪念邮票。