为文件创建一个副本或备份是一种不错的做法。

Making a copy or backup of files is considered good practice.

youdao

任何成功的备份解决方案都有一个关键要素，即在另一个位置保存重要信息的副本。

The critical element to any successful backup solution is to have a copy of the important information in another location.

youdao

可以给备份副本和存档的日志分配多少存储空间？

How much storage space can be allocated for backup copies and archived logs?

youdao

You really need that because if you have only one copy of something, you don't have a backup; so, you can store the one copy separately.

你真的很需要这项发明,因为要是你只有一份的话，你就没有备份;,这样的话，你就可以将副本单独留存。

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