备份英语

back-up；Backups; Standby

备份 [词典] backups; [计] back-up; [例句]当我因为忘了备份把完成的工作弄丢时，真是懊恼极了。I get so annoyed when I lose work because I've forgotten to back it up.

a copy

备份英语是copy

backup计算机专用术语

back-up

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。