囚禁某人
to detain someone and prevent them from leaving
拘留某人并阻止其离开
俘虏某人
to capture someone and make them a prisoner
抓住某人并使其成为囚犯
to imprison someone for a period of time
将某人监禁一段时间
释放俘虏
to let a captive go, often as part of an agreement
通常作为协议的一部分，让俘虏离开
to set a captive at liberty
让俘虏获得自由