hostages
A hostage is someone who has been captured by a person or organization and who may be killed or injured if people do not do what that person or organization demands.
It is hopeful that two hostages will be freed in the next few days.
两名人质有望在几天后获释。
If you say you are hostage to something, you mean that your freedom to take action is restricted by things that you cannot control.
Wine growers say they've been held hostage to the interests of cereal farmers.
葡萄酒制造商们说他们已被谷物种植者的利益所左右。
take someone hostage , hold someone hostage
If someone is taken hostage or is held hostage, they are captured and kept as a hostage.
He was taken hostage while on his first foreign assignment as a television journalist.
他第一次作为电视记者出国采访时就被扣作人质。