A level 1 backup would save all of the files that had changed since the level 0 backup was done.

级备份会保存自从执行0级备份以来更改过的所有文件。

youdao

A level 1 backup would save all of the files that had changed since the level 0 backup was done.

级备份会保存自从执行0级备份以来更改过的所有文件。

youdao