dead-letter
... DDE conversation DDE 对话 dead-letter 死信 deallocate 解除分配;释放 ...
a blind letter
... a blind alley 死胡同 a blind letter 死信 a blood bank 血库 ...
letter
... delivery to addressee only 限本人收取 dead letter 死信(无法投递的信) undelivered mail 无法投递的 ...
dead letter
... 死伤枕籍 casualties running very high 死信 dead letter 死信招领处 dead letter office ...
死信,指死讯;因地址、姓名不清等原因无法投递的信件。