digital backup

例句：

1. 1. We need to back up our data to the cloud before we make any changes.
   在我们做出任何更改之前，我们需要将我们的资料备份到云上。
2. 2. The digital backup of the software was corrupted, so we had to reinstall it.
   软件的数字备份被损坏了，所以我们不得不重新安装它。
3. 3. The company's digital backup system is reliable and secure.
   公司的数字化备份系统是可靠和安全的。