标题中的 flushleft 可以编译，但会出现错误

Question

所以可能有一种更简单的方法来做到这一点，所以如果我做得太错了，请纠正我的方法，但我已经......

\usepackage[justification=centering, labelfont=bf]{caption}
\begin{document}

\begin{figure}[!ht]
    \centering
    \framebox{\parbox{0.7\linewidth}{\includegraphics[width= \linewidth]{Picture.jpg}}}

    \caption{\textbf{Title if you will but centred and bold}

    \begin{flushleft}
    Fairly concise but slightly longer description of the figure but all text to be aligned to the left 
    margin as per the main body of text.
    \end{flushleft}}

    \label{mylabel}

\end{figure}

\end{document}

希望得到一些看起来像

我的代码运行良好，但收到两个错误代码：

1) 引线后没有使用合适的胶水。

\hfill l.7 ...e {James2006}. \end {flushleft}\relax }}{5} % 您应该说 `\leaders '。我找到了 ，但没有合适的 ，所以我忽略了这些领导者。

[9

2)LaTeX 错误：出现问题 - 也许缺少 \item。

我有很多数字，在对第一个数字执行此操作后，其余数字就无法正常工作。我将非常感激任何建议 :)

Answer 1

这里有很多不同的选项。红线表示边距。

\documentclass{article}
\usepackage[demo]{graphicx}
\usepackage[justification=centering, labelfont=bf, font=bf]{caption}
\usepackage{framed}

\usepackage{showframe} % remove in actual document
\renewcommand*\ShowFrameColor{\color{red}}  % remove in actual document
\begin{document}

\begin{figure}[!ht]
    \centering
    \begin{minipage}{0.7\textwidth}
        \begin{framed}
            \includegraphics[width= \linewidth]{Picture.jpg}
            \caption{Title if you will but centred and bold}
            \label{mylabel}
            \begin{flushleft}
                Fairly concise but slightly longer description of the figure but all text to be aligned to the left 
                margin as per the main body of text.
            \end{flushleft}
        \end{framed}
    \end{minipage}
\end{figure}


\begin{figure}[!ht]
    \centering
    \begin{minipage}{0.7\textwidth}
        \includegraphics[width= \linewidth]{Picture.jpg}
        \begin{framed}
            \caption{Title if you will but centred and bold}
            \label{mylabel2}
            \begin{flushleft}
                Fairly concise but slightly longer description of the figure but all text to be aligned to the left 
                margin as per the main body of text.
            \end{flushleft}
        \end{framed}
    \end{minipage}
\end{figure}


\begin{figure}[!ht]
    \centering
    \begin{minipage}{0.7\textwidth}
        \begin{framed}
            \includegraphics[width= \linewidth]{Picture.jpg}
        \end{framed}
        \caption{Title if you will but centred and bold}
        \label{mylabel3}
        \begin{flushleft}
            Fairly concise but slightly longer description of the figure but all text to be aligned to the left 
            margin as per the main body of text.
        \end{flushleft}
    \end{minipage}
\end{figure}


\begin{figure}[!ht]
    \centering
    \framebox{\parbox{0.7\linewidth}{\includegraphics[width= \linewidth]{Picture.jpg}}}

    \caption{Title if you will but centred and bold}\label{mylabel4}

    \begin{flushleft}
    Fairly concise but slightly longer description of the figure but all text to be aligned to the left 
    margin as per the main body of text.
    \end{flushleft}

\end{figure}
\end{document}

Answer 2

\documentclass{article}
\usepackage[demo]{graphicx}
\usepackage[justification=centering, font=bf]{caption}

\begin{document}
\begin{figure}[!ht]
    \centering
    \framebox{\parbox{0.7\linewidth}{\includegraphics[width=\linewidth]{Picture.jpg}}}

    \parbox{0.7\linewidth}{
    \caption{Title if you will but centred and bold}

     Fairly concise but slightly longer description of the figure but all text to be aligned to the left margin as per the main body of text.
    }
    \label{mylabel}
\end{figure}
\end{document}