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    <credit type="author">
      <name>Linux Mint</name>
      <email>root@linuxmint.com</email>
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  <title>更新管理器</title>

  <p>更新管理器为您提供软件和安全更新。</p>

  <p>更新是重要的，它们可以保证您电脑的安全性，消除错误，还能为您的操作系统添加新功能。</p>

  <p>不幸的是，有时它们会导致一种叫做“回退”的新问题，会损坏之前正常工作的组件。</p>

  <p>To keep your computer safe and in good working condition, it is recommended to apply all available updates and to set up system snapshots, so that you can restore your system in case something goes wrong.</p>

  <section id="concepts">
    <title>核心概念</title>

    <p>此部分阐述软件更新的核心概念。</p>
  </section>

  <section id="levels">
    <title>疑难解答</title>

    <p>This section explains update levels.</p>
  </section>

  <section id="kernel">
    <title>内核更新</title>

    <p>此部分阐述内核更新。</p>
  </section>

  <section id="advanced">
    <title>高级技巧</title>

    <p>此部分阐述高级技巧。</p>
  </section>
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