be classified as sth
The documents were classified as top secret.
这些文件被归类为绝密。
分类的；归类的
机密的；保密的；分类或归类；由政府正式分配的敏感等级,通常为绝密、机密、秘密和限制级；因此向未经授权的人披露是非法的；不应由个人或组织披露的
arranged into classes
分类或归类
Sorted into classes or categories.
由政府正式分配的敏感等级,通常为绝密、机密、秘密和限制级；因此向未经授权的人披露是非法的
Formally assigned by a government to one of several levels of sensitivity, usually (in English) top secret, secret, confidential, and, in some countries, restricted; thereby making disclosure to unauthorized persons illegal.
不应由个人或组织披露的
Not meant to be disclosed by a person or organization.
She was fired for sharing classified documents with a reporter.
她因向记者分享机密文件而被解雇。
用法提示：此处 classified 为形容词，意为“机密的、保密的”，修饰名词 documents。
Only authorized staff can access this classified information.
只有授权人员才能访问这些机密信息。
用法提示：classified 作形容词，修饰 information，表示“保密的、机密的”。
The results of the military test remained classified for decades.
这项军事试验的结果数十年来一直保密。
用法提示：classified 作形容词，与 remained 连用，表示“保持机密的”。
The documents were classified as top secret.
这些文件被归类为绝密。
The books are classified into fiction and non-fiction.
这些书被分为小说和非小说类。
The report will remain classified for another 50 years.
这份报告将在未来50年内保持机密。
作定语修饰名词，表示‘机密的’
She works with classified information.
她处理机密信息。
grammar · medium
易错句子This document is classify.
正确表达This document is classified.
错误使用了动词原形 'classify'，系动词后应使用形容词或过去分词 'classified' 表示状态。
grammar · medium
易错句子The company's internal memo is classified.
正确表达The company's internal memo is confidential.
'classified' 特指政府机密级别，非政府或商业机密应使用 'confidential'。
classified 指政府或官方按机密等级划分的；confidential 更强调信任基础上的保密，常用于商业或个人
classified 强调按特定标准归入类别，常带权威性；categorized 更中性，指被分到某个类别
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