在邮政通信中,经常会碰到信封 上清清楚楚地写着某路某号某单位, 但投递时却发现没有此单位。这时候 许多投递员往往图省事,改退批条一 贴,签上“已搬迁,地址不详”或“查 无此单位”,信就退回去了。其实对于 这样的信件,只要 In postal communications, often encounter a clear envelope of a certain number of units, but did not find this unit delivered. At this time, many couriers tend to save time and money by changing the slogan and signing the slogan “Have been relocated, the address is unknown,” or “There are no such units checked”. The letter was returned. In fact, for such letters, as long as