如何重新定义 Beamer moderntimeline 幻灯片的项目化

Question

我正在为我的博士论文答辩准备一张幻灯片，其中列出了一些研究工作以及一些任务和出版物。我的问题是如何修改 itemize 环境，使其像在文章模板中一样工作，以便项目以 - 的形式出现，并且尽可能地压缩它们以节省空间。

这些环境定义如何工作？因为当将此幻灯片与整个演示文稿集成时，modertimeline 的所有格式都会变得随机，幻灯片会被破坏。

\documentclass{beamer}
%\usepackage[german]{babel}
\usepackage[latin1]{inputenc}
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{decorations}
\usepackage{textcomp} 
\usetikzlibrary{snakes}
\usepackage{ifthen}
\usepackage[firstyear=2009,lastyear=2014]{moderntimeline}

\usepackage{beamerthemesplit}
%\usetheme{PaloAlto}

\makeatletter
% change these colors according to your needs
\colorlet{color0}{blue}
\colorlet{color1}{olive}

\newcommand*{\hintfont}{}
\newcommand*{\hintstyle}[1]{{\hintfont\textcolor{color0}{#1}}}
\newcommand*{\listitemsymbol}{a~}
\newcommand*{\cventry}[7][.25em]{%
  \cvitem[#1]{#2}{%
    {\bfseries\raggedright #3}%
    \ifthenelse{\equal{#4}{}}{}{, \raggedright{\slshape#4}}%
    \ifthenelse{\equal{#5}{}}{}{,  \raggedright#5}%
    \ifthenelse{\equal{#6}{}}{}{, \raggedright#6}%
    .\strut%
    \ifx&#7&%
      \else{\newline{}\begin{minipage}[t]{\linewidth}\small\raggedright#7\end{minipage}}\fi}}
\newcommand*{\cvitem}[3][.25em]{%
  \begin{tabular}{@{}p{\hintscolumnwidth}@{\hspace{\separatorcolumnwidth}}p{\maincolumnwidth}@{}}%
      \raggedleft\hintstyle{#2} & {#3}%
  \end{tabular}%
  \par\addvspace{#1}}
\tlmaxdates{2009}{2014}
\newlength{\quotewidth}
\newlength{\hintscolumnwidth}
\setlength{\hintscolumnwidth}{0.175\textwidth}
\newlength{\separatorcolumnwidth}
\setlength{\separatorcolumnwidth}{0.025\textwidth}
\newlength{\maincolumnwidth}
\newlength{\doubleitemmaincolumnwidth}
\newlength{\listitemsymbolwidth}
\settowidth{\listitemsymbolwidth}{\listitemsymbol}
\newlength{\listitemmaincolumnwidth}
\newlength{\listdoubleitemmaincolumnwidth}

\setlength{\maincolumnwidth}{\dimexpr0.9\linewidth-\separatorcolumnwidth-\hintscolumnwidth\relax}

\tikzset{
    tl@startyear/.append style={
        xshift=(0.5-\tl@startfraction)*\hintscolumnwidth,
        anchor=base
    }
}
\makeatother

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@misc{A01,
    author = {Author, A. and Buthor, B. and Cuthor, C.},
    year = {2001},
    Journal = {Some Conference},
    title = {First Article Title Apha AAAAAAAAAAAAA AAA AA AA AA A AAA A A A AAAA}
}

\end{filecontents}

\usepackage     [   style=numeric-comp,
                            autocite=superscript, % apply options here.
                            sortcites,
                            backend=bibtex
                        ]{biblatex}
\usepackage{scalefnt,lmodern}

\addbibresource{\jobname.bib}

\begin{document}

\begin{frame}

\tldatelabelcventry{2009.580}{June 2009}{MSc Thesis}{}{}
{}{}{}

\tllabelcventry{2009.583}{2009.833}{July-Sept. 2009}{Research stay}{Some Lab at SomeUniversity}
{Somewhere}{}{
\begin{itemize}
\item task 1
\item task 2
\item More awesome tasks we developed
\end{itemize}
}

\tllabelcventry{2011.500}{2011.995}{June-Dec. 2011}{Research stay}{Some Lab at SomeUniversity}{Seomewhere}{}{}

\tldatelabelcventry{2010.500}{June 2010}{Some Conf. 2010}{}{}
{}{{\scriptsize \fullcite{A01}}}

\end{frame}

\end{document}