我正在尝试将文档中的特定页面横向显示，并使用pdflscape包和landscape环境来实现此目的。页面确实变为横向模式，但文本没有（如图所示）。
是什么让页面变成这样？
这里我添加了我的文档的main.tex文件和try.sty文件。
\documentclass[oneside,12pt,a4paper,fleqn]{book}
\usepackage{try}
\begin{document}
\frontmatter
\mainmatter
\input{CompleteGraph.tex}
\backmatter
\end{document}
这是 try.sty 文件。
% LaTeX cod for chapter header
%--------------------------------------------------------
\makeatletter
\def\@makechapterhead#1{
%\vspace*{20\p@} % \vspace*{15\p@}
{\parindent \z@
\centering
\normalfont
\ifnum \c@secnumdepth >\m@ne
\if@mainmatter
\normalsize
\bfseries \@chapapp\space \thechapter
\par\nobreak
\vskip 1.4\baselineskip
\fi
\fi
\interlinepenalty\@M
\normalsize
\bfseries #1\par\nobreak
\vskip 1.4\baselineskip %
}}
\def\@schapter#1{\if@twocolumn
\@topnewpage[\@makeschapterhead{#1}]%
\else
\@makeschapterhead{#1}
\@afterheading
\fi}
\def\@makeschapterhead#1{
%\vspace*{20\p@} % \vspace*{20\p@} %
{\parindent \z@
\centering
\normalfont
\interlinepenalty\@M
\normalsize
\bfseries #1\par\nobreak
\vskip 1.4\baselineskip
}}
\makeatother
\renewcommand{\chaptername}{CHAPTER}
%------------------------------------------------------------
% Commands for layout
%\setlength{\topmargin}{-1.2cm}
%\setlength{\oddsidemargin}{1.7cm} %\setlength{\oddsidemargin}{1.46cm}
\setlength{\textwidth}{14.5cm}
\setlength{\textheight}{24.5cm} % \setlength{\textheight}{24.5cm}
%\setlength{\headheight}{2mm}
%\setlength{\headsep}{10.175mm}
%-------------------------------------------------------------
% Command for 1.5 spacing
%\renewcommand{\baselinestretch}{1.5}
\usepackage{doublespace}
\setstretch{1.5}
%-------------------------------------------------------------
% Command for indentation
\setlength\parindent{.5in}
\usepackage{indentfirst} %1st line indented after section...
%-------------------------------------------------------------
% Command for space between paragraph
\makeatletter
%\setlength{\parskip}{1.5\baselineskip \@plus 3ex
% \@minus 2.0ex}
\setlength{\parskip}{2\baselineskip \@plus .01ex
\@minus .01ex}
\makeatother
%-------------------------------------------------------------
% Commands for no hyphenation and right justified
\hyphenpenalty=10000 \sloppy
\raggedbottom
%-------------------------------------------------------------
% Command to get rid of default running head
\pagestyle{myheadings}
%-------------------------------------------------------------
% Command for page number
% \makeatletter
% \renewcommand{\ps@plain}{%
% \renewcommand{\@oddhead}{\hfill\textrm{\thepage}}
% \renewcommand{\@evenhead}{\@oddhead}
% \renewcommand{\@evenfoot}{}
% \renewcommand{\@oddfoot}{} }
% \makeatother
%-----------------------------------------------------------------
%For section font
% \usepackage{sectsty}
% \chapterfont{\centering\normalsize\uppercase}
% \sectionfont{\normalsize\uppercase}
% \subsectionfont{\normalsize}
% \subsubsectionfont{\itshape\normalsize}
%---------------------------------------------------------
%--------------------------------------------------------------
% Commands for REFERENCES name
\renewcommand{\bibname}{REFERENCES}
%--------------------------------------------------------------
% Commands to change vertical space in section and subsection
\makeatletter
\renewcommand{\section}{\@startsection
{section}% % the name
{1} % the level
{0cm} % the indent
{1.0cm} % the beforeskip
{0.01cm} %{0.5cm} % the afterskip
{\normalfont\normalsize\bfseries} } % the style
\renewcommand{\subsection}{\@startsection
{subsection}% % the name
{2} % the leve2
{0cm} % the indent
{1.0cm} % the beforeskip
{0.01cm} %{0.5cm} % the afterskip
{\normalfont\normalsize\bfseries} } % the style
\makeatother
%--------------------------------------------------------------
% Commands to change horizontal space in section and subsection
% for times romans
\renewcommand{\thesection} % space between sect. etc.
{\thechapter.\arabic{section}\hspace{.12in}}
\renewcommand{\thesubsection}
{\thesection\hspace{-.3cm}.\arabic{subsection} \hspace{-.135cm}}
%--------------------------------------------------------------
% Commands for TocLoFT
\usepackage{tocloft}
%\cftsetrmarg{2.75cm} %
\cftsetrmarg{1.5cm} %
\cftsetpnumwidth{1.25cm}
%\cftsetpnumwidth{1.25cm}
\renewcommand{\cftdot}{} % get rid of dots
%Table of Contents
\renewcommand{\contentsname}{} % off tocname
\renewcommand{\cftchapfont}{\bfseries}
\renewcommand{\cftchappagefont}{\normalfont\bfseries}
\renewcommand{\cftchappresnum}{\hspace{0.3cm}CHAPTER }
%\setlength{\cftchapindent}{.8cm} % chapter indent
\setlength{\cftsecindent}{2.3cm} % section indent
\setlength{\cftsubsecindent}{3.25cm} % subsection indent
\setlength{\cftchapnumwidth}{3.25cm} % chp number width
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \renewcommand{\cftchapafterpnum}{\rule{1.75ex}{0ex}}
% \renewcommand{\cftsecafterpnum}{\rule{1.75ex}{0ex}}
% \renewcommand{\cftsubsecafterpnum}{\rule{1.75ex}{0ex}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\renewcommand{\cftchapafterpnum}{\rule{0.75ex}{0ex}}
\renewcommand{\cftsecafterpnum}{\rule{0.75ex}{0ex}}
\renewcommand{\cftsubsecafterpnum}{\rule{0.75ex}{0ex}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \renewcommand{\cftchappagefont}{\normalfont}
%-------------------------------------------------------------
%List of Table
\setlength{\cfttabnumwidth}{2.5cm} %\setlength{\cfttabnumwidth}{2.5cm}
\renewcommand{\listtablename}{} % off lotname
%\setlength{\cfttabindent}{-.015cm} % table indent %%%%%%%%%%%%%%%%%%
\setlength{\cfttabindent}{-.1cm} % table indent %%%%%%%%%%%%%%%%%%
\renewcommand{\cfttabpresnum}{Table }
\renewcommand{\cfttabafterpnum}{\rule{2ex}{0ex}}
\cftsetrmarg{3cm}
%------------------------------------------------------------
%List of Figure
\setlength{\cftfignumwidth}{2.5cm}
\renewcommand{\listfigurename}{} % off lofname
\setlength{\cftfigindent}{-.1cm} % figure indent %%%%%%%%%%%%%%%%%%
\renewcommand{\cftfigpresnum}{Figure }
\renewcommand{\cftfigafterpnum}{\rule{2ex}{0ex}}
%-------------------------------------------------------------
%-------------------------------------------------------------
% Command for bold caption
\makeatletter
\long\def\@makecaption#1#2{\vskip 10\p@ % caption parameter
\setbox\@tempboxa\hbox{{ #1\,\,\,\,\,} #2} %%%%%
\ifdim \wd\@tempboxa >\hsize % caption parameter
{#1\,\,\,\,\,} #2\par % caption parameter
\else % caption parameter
\hbox to\hsize{\hfil\box\@tempboxa\hfil} % caption parameter
\fi} % caption parameter
\makeatother
\renewcommand{\thefigure}{\arabic{chapter}.\arabic{figure}}
\renewcommand{\thetable}{\arabic{chapter}.\arabic{table}}
%--------------------------------------------------------------
\usepackage{paralist} %refine list item
%--------------------------------------------------------------
\usepackage{latexsym,amsmath,amssymb} % math symbols
%--------------------------------------------------------------
\usepackage{graphicx} % .eps graphic
%--------------------------------------------------------------
\usepackage{pdflscape} % for landscape
%--------------------------------------------------------------
\usepackage{times}
%--------------------------------------------------------------
% Theorem-Like-Environment
\usepackage{theorem}
{\theorembodyfont{\upshape}
\newtheorem{lemma}{Lemma}[chapter]
\newtheorem{theorem}{\rule{0ex}{5ex}Theorem}[chapter]
\newtheorem{corollary}{Corollary}[chapter]
\newtheorem{proposition}{Proposition}[chapter]
\newtheorem{definition}{\rule{0ex}{5ex}Definition}[chapter]
\newtheorem{example}{Example}[chapter] }
%--------------------------------------------------------
\newenvironment{proof}{\begin{paragraph}
{Proof}\vspace{-1cm}}{\end{paragraph}}
\newenvironment{solution}{\begin{paragraph}
{Solution}\vspace{-1cm}}{\end{paragraph}}
CompleteGraph.tex 文件非常简单，如下所示。
\begin{landscape}
$COM\rightarrow$ a set of combinations of $\textrm{C}^{n}_{m}$\\
$(x_0\textrm{ }x_1\textrm{ }\cdots\textrm{ }x_m)\in COM$ such $x_i=0,1,2,...,n-1$ for $i=0,1,2,...,m$\\
$\delta_j\rightarrow$ difference between two consecutive $x_i$\\
$\Delta(\delta_1\textrm{ }\delta_2\textrm{ }\cdots\textrm{ }\delta_{m-1})\rightarrow$ collection/sequence of differences $\delta_j$ for $j=1,2,...,m-1$
\end{landscape}