captive
noun [ C ] uk/ˈkæp.tɪv/ us/ˈkæp.tɪv/
囚徒;猎获物;（尤指）战俘
a person or animal whose ability to move or act freely is limited by being closed in a space; a prisoner, especially a person held by the enemy during a war
When the town was recaptured, we found soldiers who had been captives for several years. 夺回该镇后，我们找到了被俘数年的士兵。
hold/take someone captive 囚禁;俘虏
to keep someone as a prisoner or make someone a prisoner
The terrorists were holding several diplomats captive. 恐怖分子扣押了数名外交官。