目录条目宽度

Question

我试图在文本进入页码列之前中断条目，现在我得到了这个：

现在我从.cls文件中获得了以下内容：

\renewenvironment{thebibliography}[1]
 {\chapter*{\bibname
    \addcontentsline{toc}{chapter}{\bibname}
    \@mkboth{\MakeUppercase\bibname}{\MakeUppercase\bibname}}%
\begin{singlespace} %
  \list{\@biblabel{\@arabic\c@enumiv}}%
       {\settowidth\labelwidth{\@biblabel{#1}}%
        \leftmargin\labelwidth
        \advance\leftmargin\labelsep
        \@openbib@code
        \usecounter{enumiv}%
        \let\p@enumiv\@empty
        \renewcommand\theenumiv{\@arabic\c@enumiv}}%
  \sloppy
  \clubpenalty4000
  \@clubpenalty \clubpenalty
  \widowpenalty4000%
  \sfcode`\.\@m}
 {\def\@noitemerr
   {\@latex@warning{Empty `thebibliography' environment}}%
  \endlist