在 LaTeX 中插入多个空行的正确做法是：

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\vspace*{n\baselineskip}

其中 n 为想空的行数。

无序列表

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\begin{itemize}\compresslist
    \item ease of use when formatting,
    \item  compliance to electronic requirements,
    \item and conformity of style.
\end{itemize}

三图横向并列跨栏独立标题

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\begin{figure*}
    \begin{minipage}[t]{0.34\linewidth}
        \centering
        \includegraphics[width=\textwidth]{pic/computation_cost.png}
        \caption{Jay}
        \label{fig:a_computation_cost}
    \end{minipage}
    \begin{minipage}[t]{0.34\linewidth}
        \centering
        \includegraphics[width=\textwidth]{pic/communication_cost.png}
        \caption{cost}
        \label{fig:b_communication_cost}
    \end{minipage}
    \begin{minipage}[t]{0.34\linewidth}
        \centering
        \includegraphics[width=\textwidth]{pic/computation_cost.png}
        \caption{cost}
        \label{fig:c_computation_cost}
    \end{minipage}
\end{figure*}

三图横向并列跨栏子标题

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\usepackage{subfigure}
\begin{figure*}
    \subfigure[name1]{
        \centering  %图片全局居中
        \label{Fig.sub.1}
        \includegraphics[width=0.32\textwidth]{pic/computation_cost.png}
    }
    \subfigure[name2]{
        \centering  %图片全局居中
        \label{Fig.sub.2}
        \includegraphics[width=0.33\textwidth]{pic/communication_cost.png}
    }
    \subfigure[name3]{
        \centering  %图片全局居中
        \label{Fig.sub.3}
        \includegraphics[width=0.33\textwidth]{pic/communication_cost.png}
    }
    \caption{Main name}
    \label{Fig.main}
\end{figure*}

无标题

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\begin{figure*}
    \centering
    \includegraphics[width=0.32\textwidth]{pic/computation_cost.png}
    \includegraphics[width=0.33\textwidth]{pic/communication_cost.png}
    \includegraphics[width=0.33\textwidth]{pic/communication_cost.png}
    \caption{This is a picture.}
    \label{fig:}
\end{figure*}

数组与表格

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$$\begin{array}{|l|l|} % control positon left center right(l c r), '|' control border
        \hline                                & \text {No Attack, Attacks} \\
        \hline \text { Krum }                 & 0.14, 0.72, 0.13           \\
        \hline \text { Krum + ERR }           & 0.14, 0.62, 0.13           \\
        \hline \text { Krum + LFR }           & 0.14, 0.58, 0.14           \\
        \hline \text { Krum + Union }         & 0.14, 0.48, 0.14           \\
        \hline \hline \text { Trimmed mean }  & 0.12, 0.15, 0.23           \\
        \hline \text { Trimmed mean + ERR }   & 0.12, 0.17, 0.21           \\
        \hline \text { Trimmed mean + LFR }   & 0.12, 0.18, 0.12           \\
        \hline \text { Trimmed mean + Union } & 0.12, 0.18, 0.12           \\
        \hline \hline \text { Median }        & 0.13, 0.17, 0.19           \\
        \hline \text { Median + ERR }         & 0.13, 0.21, 0.25           \\
        \hline \text { Median + LFR }         & 0.13, 0.20, 0.13           \\
        \hline \text { Median + Union }       & 0.13, 0.19, 0.14           \\
        \hline
    \end{array}
$$
\begin{center}
    Table 1: Defense, in Depth
\end{center}
``