How do we prevent these continual breakdowns?我们如何防止这些一再出现的故障?...breakdowns in communications and electric power grids.通信系统与输电网的中断Her old car was unreliable, so the trip was plagued by breakdowns.她的旧车老不听使唤，一路上总是出故障。Her ol...
Her old car was unreliable, so the trip was plagued by breakdowns.她的旧车老不听使唤，一路上总是出故障。How do we prevent these continual breakdowns?我们如何防止这些一再出现的故障?Its log shows several recent breakdowns.航海日志上写有好几处新近发生的故障....