1.quiet; tranquil; still; smooth; peaceful 2.peace; balance; calmness; tranquility; composure 心情平静peace of mind.平静的湖面the calm surface of the lake.平静的大海pacific waters内心的平静internal peace平静的心情an easy mind平静的生活a quiet life平静的河流a pacific river平静的说话声a calm voice不平静的夜晚a restless night在家的平静夜晚a quiet evening at home.