保持安静 Keep Silence ; keep quiet ; be quiet

保持冷静 Keep Cool ; Stay Cool ; keep one's shirt on ; keep calm

保持冷静的头脑 K-Keep cool ; keep a cool head

请保持安静 Quiet Please ; Please keep quiet ; Please be quiet ; Keep silence

保持沉默/安静 keep silent/quiet ; keep silent ; keep silence /silent ; quiet

静电保护 [电子] electrostatic protection ; static protection ; ESD

你的双手保持静止 Your hands keep still

保持肃静 solemn silence

保持平静 keep sb's head ; keep one's head ; keep calm ; To Remain Calm

保持静脉畅通 KVO