back-up

英语音标

英语翻译

n.后援；备份；备用

英语例句

Liu Bei was given 1,000 troops as the back up force. 刘备带一千人马作后援。

You can back up and restore full-text catalogs. 可以备份和还原全文目录。

This option will back up files on the volume. 该选项将备份卷中的文件。

You should carry a spare wheel in the back of your car. 你应在车后带一个备用的轮胎。