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。