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单词
ˌdead ˈletter
释义
ˌdead ˈletter
NOUN
C
1
a letter that can neither be delivered nor returned to anyone , because the addresses are missing or not complete （由于地址缺失或不完整而无法投递或退回的）死信
2
a law , agreement , or tradition that people no longer pay any attention to 形同虚设的法律（或协议）；不再遵循的传统