[网络] 开机-关机程序 switching off: 断电; 断距; 断开cut-off; switching off: 开闸cumulative switching off: 累积断开; 累积引起的断开emergency switching off: 事故切断emergency switching-off: 紧急切断; 事故切断; 应急切断下载手机词典可随时随地查词查翻译