Undo operations are multi-level and expand the number of operations that can be undone.

Undo操作是多级的并且增加了可以执行撤销操作的次数。

youdao

Undo operations are multi-level and expand the number of operations that can be undone.

Undo操作是多级的并且增加了可以执行撤销操作的次数。

youdao