镇定zhèn dìng [settle; calm;composed] 遇到紧急情况不慌乱 镇静zhèn jìng [compose] 心情安定、平静 冷静lěng jìng 1. [sober;calm; sound]∶平心静气、毫无偏见地分析道理而不感情用事 2. [lonely]∶人少而清静;不热闹 从容cóng róng 1. [calm]∶悠闲舒缓 2. [plentiful]∶充裕;宽裕 3. [rest]∶休息