at liberty 1. 自由的,不受监禁的 set a slave (a prisoner) at liberty 解放奴隶(释放囚犯) 2. 获许可的,有权的 I am quite at liberty to act on their behalf. 我完全有权代表他们行事。 You are at liberty to leave at any time during the meeting. 会议期间你可随时离开。 3. 有空闲的;不占用的 I shall be at liberty after mid-day. 我午后有空。 4. 失业的