top secret

US 
UK 
  • adj.绝密
  • Web绝密的;极机密的;最高机密
top-secret
adj.
1.
(尤指对他国政府)最高机密的,绝密的that must be kept completely secret, especially from other governments
This information has been classified top secret.
这一情报被归为绝密类别。
top-secret documents
绝密文件

Sample Sentence

Definition:
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