1989年8月30日,美国发行了一枚纪念邮票,纪念全国邮递员协会成立100周年。邮票上有三个满面笑容的邮递员,两男一女。中间一位个子高一些,左边的一位略胖,年纪也大一些,右边的比较年轻、个子也比较小的,是一位非洲裔女邮递员。乍看之下,会以为这不就是一枚画了三个邮递员的普通 On August 30, 1989, the United States issued a commemorative stamp commemorating the 100th anniversary of the establishment of the National Postman Association. There are three smiling postman, two men and a woman on the stamp. The middle of a tall, a little fat on the left, older, larger, on the right is younger, smaller size is an African American female postman. At first glance, I would assume that this is not an ordinary one with three postmen