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%%%% 下面的命令设置行间距与段落间距 %%%%
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\begin{document}
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\thispagestyle{plain}
\begin{center}
  
  {\LARGE\textbf{高速上手 C++11/14/17/20}}
  
  \vspace{1em}
  {\large 欧长坤 (hi@changkun.us)}
  
  \vspace{1ex}
  最后更新 \today - \revision

  \vspace{1ex}
  \textbf{注意}

  \noindent 此 PDF 的内容可能过期，请检查\href{https://changkun.de/modern-cpp}{本书网站}以及 \href{https://github.com/changkun/modern-cpp-tutorial}{GitHub 仓库}以获取最新内容。

  \vspace{1em}
  \textbf{\large 版权声明}

  \noindent 本书系\href{https://github.com/changkun}{欧长坤}著，采用“知识共享署名-非商业性使用-禁止演绎 4.0 国际许可协议 (cc by-nc-sa)”进行许可。\texttt{\small http://creativecommons.org/licenses/by-nc-nd/4.0/}

  \vspace{7em}
  \includegraphics{../../assets/cover-2nd}

\end{center}

$for(include-before)$
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