backups是什么意思

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英音 [ 'bækʌps ] ； 美音 [ 'bækʌps ] 释义：备份英语句子Backup copy备份拷贝Backup (underwriting) facility fee后备(保险)项目费用There's a backup of traffic at the drawbridge.吊桥上交通阻塞。

There's a backup in the sink.下水道堵塞。This is the backup commissarial list.这是候补委员名单。