这一步骤是为了确保在需要恢复原文件时，只要去掉“OLD”就可以了。

This will make sure that if you ever need to revert back to the file you can simply delete the OLD and it will be back to normal.

youdao

这一步骤是为了确保在需要恢复原文件时，只要去掉“OLD”就可以了。

This will make sure that if you ever need to revert back to the file you can simply delete the OLD and it will be back to normal.

youdao