Make a backup copy of the login.css file.

保存login . css文件的备份副本。

youdao

Restore the database using the backup copy.

使用备份副本恢复数据库。

youdao

Did you make a backup copy of that file?

那份文件你有备份吧？

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。

耶鲁公开课 - 金融市场课程节选

Chances, are, however, you keep a backup copy of your operating system on an optical disc in the desk drawer, just in case.

FORBES: Apple Just Killed The Optical Drive

The goal, says Real Networks Vice President Jeff Chasen, is to do away with space-consuming discs and let users create a backup copy of their video collection.

FORBES: Magazine Article

So, periodically, whenever network traffic permits, the endpoint and the cloud should have a handshake, during which the endpoint updates the cloud with a backup copy of any files unique to that endpoint.

FORBES: The Case For Endpoints