在 itemize 环境中部的起始列

Question

(如何) 我能在 itemize 环境的中间开始列？AM(N)WE：

\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}

\begin{document}

\begin{frame}
\begin{block}
\begin{itemize}
  \item Signs
  \begin{itemize}
    \item The majority of putative abstract ``signs"
    \begin{columns}
    \begin{column}{.64\textwidth}
    \item 17 distinct signs have been discovered.
    \item Egg shells, dated to 60 kya, have also been discovered.
    \end{column}
  \end{itemize}
\end{itemize}

  \begin{column}{.33\textwidth}
  pictures will go here
  \end{column}
\end{columns}
\end{block}
\end{frame}

\end{document}

这只会产生3: Missing $ inserted。我需要它来制作海报（使用包beamerposter）

Answer 1

完全不干扰项目化流程\smash。

\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}
\usepackage{lmodern}
\begin{document}

\begin{frame}
\begin{itemize}
  \item Signs
  \begin{itemize}
    \item The majority of putative abstract ``signs"
    \item 17 distinct signs have been\\ discovered. 
    \item Egg shells, dated to 60 kya,\\ have also been discovered. 
    \qquad \smash{\includegraphics[height=3.5\baselineskip]{example-image}}
  \end{itemize}
\end{itemize}
\end{frame}

\end{document}

Answer 2

• beamer 块需要标题，即使它是空的

• 如果你在另一个环境中打开一个环境，那么你也可以在它里面关闭它

---

\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}

\begin{document}

\begin{frame}
\begin{block}{}
\begin{itemize}
  \item Signs
  \begin{itemize}
    \item The majority of putative abstract ``signs"
    \begin{columns}
    \begin{column}{.5\textwidth}
    \item 17 distinct signs have been discovered.
    \item Egg shells, dated to 60 kya, have also been discovered.
    \end{column}
    \begin{column}{.33\textwidth}
     pictures will go here
    \end{column}
    \end{columns}
  \end{itemize}
\end{itemize}

\end{block}
\end{frame}

\end{document}

---

为了获得均匀的间距，我建议采用另一种方法：

\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}

\begin{document}

\begin{frame}
    \begin{block}{}
        \begin{itemize}
        \item Signs
        \begin{itemize}
            \item The majority of putative abstract ``signs"
        \end{itemize}
    \end{itemize}
    \vspace*{-.8\baselineskip}
    \begin{columns}[onlytextwidth,T]
        \begin{column}{.5\textwidth}
            \begin{itemize}
                \item[]
              \begin{itemize}
                    \item 17 distinct signs have been discovered.
                    \item Egg shells, dated to 60 kya, have also been discovered.
            \end{itemize}
            \end{itemize}
        \end{column}
        \begin{column}{.33\textwidth}
             \includegraphics[width=\textwidth]{example-image-duck}
        \end{column}
    \end{columns}
    \end{block}
\end{frame}

\end{document}