动词短语
中文翻译：扣留某人作为人质
同义词：
['detain', 'imprison', 'keep as hostage', 'hold for ransom']
例句：
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1. The kidnappers held the girl's mother asa hostage until she paid the ransom.
绑匪将女孩的母亲扣为人质，直到她支付了赎金。
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2.The thieves were caught and heldfor ransom by the police.
这些小偷被警方抓获并扣为人质以索要赎金。
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3. The prisoner waskept as a hostage until his familycould pay the ransom.
这名囚犯被扣为人质，直到他的家人能够支付赎金。