网易ubuntu软件源_ubuntu如何更新源

deb http://mirrors.163.com/ubuntu/ zesty main restricted universe multiverse
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deb http://mirrors.163.com/ubuntu/ xenial main restricted universe multiverse
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deb http://mirrors.163.com/ubuntu/ wily main restricted universe multiverse
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deb http://mirrors.163.com/ubuntu/ vivid main restricted universe multiverse
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deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
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deb http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
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