dead-letter 死信 ; 逝世信 ; 㰕
dead letter queue 无用字母队列 ; 死信队列
Dead Letter Office 死信办公室 ; 恋恋情书 ; 死信招领处 ; 无信邮局
remain a dead letter 石沉大海
dead-letter queue 死信队列 ; 无效信件伫列
Dead Letter Box 死信箱
dead-letter box 死信箱
transaction dead-letter queue 死信处理事务队列 ; 事务处理死信队列
a dead letter 一纸空文 ; 官样文章
N-COUNT If you say that a law or agreement is a dead letter, you mean that it still exists but people ignore it. 空文
No one does anything about it and the law becomes a dead letter.
没人执行，该法律即成一纸空文。
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