Message in Chinese (Traditional) (中文(繁體))
        只有當 UndoService.State == UndoState.Normal 時,才能呼叫此方法。
Unlocalized message
        This method can only be called while UndoService.State == UndoState.Normal.
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只有當 UndoService.State == UndoState.Normal 時,才能呼叫此方法。

This method can only be called while UndoService.State == UndoState.Normal.
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