c. 1300, from Old French covert "hidden, obscure, underhanded," literally "covered," past participle of covrir "to cover" (see cover). Related: Covertly.
实用例句
1. They have been supplying covert military aid to the rebels.
他们一直在暗地里向叛乱者提供军事支援。
来自柯林斯例句
2. The depth of covert racism in my own profession frightens me.
我所从事的职业中暗藏着如此深的种族主义偏见，这让我感到害怕。
来自柯林斯例句
3. The army carried out covert surveillance of the building for several months.
