翻译如下:
关闭手机
用turn off或switch off都可以。
例句:
进场观看演出时请关闭手机等通讯设备或调至静音。
Please switch off mobile phones and other communication devices or turn on mute mode during performance.
在会议期间,请关闭手机或将手机置于振动状态。
Please turn off the cellular phones or set the cellular phones in thevibrating state during the conference.