[, ]the activity of writing letters通信；通信联系◆The organization has been in correspondence with the bank about the matter.机构就此事一直与银行保持通信联系。◆a long correspondence长期通信联系 [] the letters a person sends and receives往来信件；来往书信◆email correspondence电子邮件信件◆Address all correspondence to …把所有的信件寄给…commercial correspondence