网上找到的包含插图用到的函数索引及说明：
http://www.ctex.org/documents/latex/graphics/node120.html
自己的例子：
插入并列图片：
函数：
\begin{figure}
\begin{minipage}[t]{0.5\linewidth}
\centering
\includegraphics[trim = 20mm 80mm 50mm 10mm, clip, width=0.5\textwidth, height=0.5\textwidth]{fig//1.pdf}
\caption{d}。
\label{fig:Dictionary L20} %% label for second subfigure
\end{minipage}%
\begin{minipage}[t]{0.5\linewidth}
\centering
\includegraphics[trim = 30mm 80mm 40mm 10mm, clip, width=0.5\textwidth, height=0.5\textwidth]{fig//2.pdf}
\caption{d}
\label{fig:Dictionary L21} %% label for second subfigure
\end{minipage}
\end{figure}
\begin{figure}
\centering
\subfigure[box 1]{
\label{fig:subfig:a} %% label for first subfigure
\includegraphics[trim = 20mm 80mm 50mm 10mm, clip, width=0.15\textwidth, height=0.2\textwidth]{fig//1.pdf}}
\hspace{1mm}
\subfigure[box 2]{
\label{fig:subfig:b} %% label for second subfigure
\includegraphics[trim = 30mm 80mm 40mm 10mm, clip, width=0.15\textwidth, height=0.2\textwidth]{fig//2.pdf}}
\caption{Two Subfigures}
\label{fig:subfig} %% label for entire figure
\end{figure}
结果对比：
