形容词保密的，（信息）归入密级的; 分类的，归类的

动词分类( classify的过去式和过去分词)

形容词

1. This information is classified; only a few top officials can see it.
这份情报是保密的，只有少数几个高级官员能看。

2. In the library new books have to be classified before they are put on shelves for reader's use.
图书馆的新书必须先行分类然后才上架供读者使用。

1. 分成类的：classification schemes 分类表 | Classified 分成类的 | classified balance sheet 分类资产负债表

2. 保密的已分类的：classificationsymbol 入级符号 | classified 保密的已分类的 | classifieddata 密级资料

1. (信息或文件)机密的，保密的
Classified information or documents are officially secret.

e.g. He has a security clearance that allows him access to classified information...
他获得了安全许可，可以接触机密信息。
e.g. The document was highly classified and circulated to a very limited group of people.
这份文件高度机密，只在很小范围内传阅。

noun

1. a short ad in a newspaper or magazine (usually in small print) and appearing along with other ads of the same type

Synonym: classified adclassified advertisement