Once it 's done, the user can not make any change. He can not ADD any information to it or delete any information from it.
但用户不能对光盘作任何改动，既不能增加也不能删除光盘上的信息。
Once it 's done, the user can not make any change. He can not ADD any information to it or delete any information from it.
但用户不能对光盘作任何改动，既不能增加也不能删除光盘上的信息。
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