囚犯们企图和看守做换取自由的交易。
The prisoners tried to barter with the guards for their freedom.
自由从囚禁、奴役或强制劳动中解放出来，获得身体上和法律上自由的状况
The condition of being physically and legally free from confinement, servitude, or forced labor.
自由不受约束的或不受限制的；自由的
Not in confinement or under constraint; free.
