classified/ˈklæsɪfaɪd/
adj.1. 分类的;分等级的classified advertisements分类广告
the classified part of the telephone book电话簿的分类部分
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。
2. 机密的,保密的(文件等)classified documents机密文件
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。