| 释义 |
dead letterBrE /ˌded ˈletə(r)/NAmE /ˌded ˈletər/ noun [usually sing.] a law or an agreement that still exists but that is ignored 无人遵守的法律；形同虚设的协定；空文(especially NAmE) a letter that cannot be delivered to an address or to the person who sent it 死信；无法投递（或退回）的邮件 |