每天下班前，我们都会备份当天输入电脑的所有记录。

Before we leave work each day, we make a ___backup of all the records we have entered into the computer that day.

该部门的备份磁盘都存储在不同的建筑里。

The department's ___backup disks are all stored in a different building.

看来他已经在备份内存的一个特殊文件中创建了一个副本。

It seems he had created a copy in a special file on a ___backup memory.