hold someone captive
US /hoʊld ˈsʌmwʌn ˈkæptɪv/
UK /hoʊld ˈsʌmwʌn ˈkæptɪv/

1.
扣押某人, 囚禁某人
to keep someone as a prisoner or in a confined space, often against their will
:
•
The kidnappers decided to hold him captive until the ransom was paid.
綁匪決定扣押他直到贖金付清。
•
The police managed to rescue the victims who were being held captive in the basement.
警方成功解救了被囚禁在地下室的受害者。