\begin{figure}
\centering
\includegraphics[width=0.8\textwidth,height=0.5\textwidth]{the.png}
\caption{The caption} \label{fig1}
\end{figure}
里的
\includegraphics[width=0.8\textwidth,height=0.5\textwidth]{the.png}
\begin{figure}
\centering
\includegraphics[width=0.8\textwidth,height=0.5\textwidth]{the.png}
\caption{The caption} \label{fig1}
\end{figure}
里的
\includegraphics[width=0.8\textwidth,height=0.5\textwidth]{the.png}