I'VE NEVER DONE AN O-ROLL BEFORE, AND I THINK IT'S SIMPLE, BUT IT'S NOT REALLY EASY TO REALLY DO IT, FOR THE FIRST TIME WITHOUT A LOT OF BUTTER CLIPS, FOR THE FIRST TIME, FOR THE FIRST TIME, FOR THE FIRST TIME, FOR THE LAST TIME, FOR THE FIRST TIME, FOR THE LAST TIME, FOR THE SECOND TIME, AND FOR THE SECOND TIME, FOR THE SECOND TIME, WITH A LITTLE EXPERIENCE OF IMPROVEMENT, IT'S BARELY POSSIBLE TO GET THROUGH, SO BAKING IS REALLY AN EXERCISE OF PATIENCE. WE CAN DO IT SLOWLY。