backups的精选

英音['bækʌps]美音['bækʌps]释义：备份英语句子Backupcopy备份拷贝Backup(underwriting)facilityfee后备(保险)项目费用There'sabackupoftrafficatthedrawbridge.吊桥上交通阻塞。There'sabackupinthesink.下水...