如何敏感评论部分（下部）代码环境以 \lstdefinelanguage Maple 为上部？
\documentclass{book}
\usepackage{tcolorbox}
\tcbuselibrary{listings,skins,theorems}
\lstdefinelanguage{Maple}{%
morekeywords={%
and,assuming,break,by,catch,description,do,done,
elif,else,end,error,export,fi,finally,for,from,global,if,
implies,in,intersect,local,minus,mod,module,next,not,od,
option,options,or,proc,quit,read,return,save,stop,subset,then,to,try,union,use,uses,while,xor},
sensitive=true,
%keywordstyle=\TNR\color{black},
keywordstyle=\color{black},
morecomment=[l][\color{green!50!black}]\#,
morestring=[b]",
morestring=[d]",
aboveskip={0pt},
belowskip={0pt}%
}[keywords,comments,strings]
\newtcblisting{code}[1]{%
%listing only,
skin=bicolor,
colback=white,
colbacklower=white,
colupper=red!40!black,
collower=blue,
%overlay={\draw[dashed,black] (segmentation.west)--(segmentation.east);},
listing options={language=Maple},
frame style={draw=white,left color=white,right color=white},
%fontupper=\latinfont\setLTR\ttfamily\bfseries,
fontupper=\ttfamily\bfseries,
fontlower=\itshape,
%fontlower=\rm\bf,
%fontlower=\latinfont\setLTR,
%math lower,
width=\linewidth,
%toprule=1mm,bottomrule=.3mm,rightrule=.3mm,leftrule=3mm,
boxrule=0mm,
outer arc=1mm,arc=1mm,
leftupper=0cm,leftlower=0cm,rightupper=0cm,rightlower=0cm,
top=0mm,bottom=0mm,middle=0mm,
%height=,
valign=center,
valign lower=center,
%before=\begin{center}, after=\end{center},
%before upper={\texttt{>}},
%before lower={\begin{center}}, after lower={\end{center}},
center lower,
% center upper,
%flushleft lower,
%flushright upper,
nobeforeafter,
%math lower,
%ams align* lower,
%ams nodisplayskip lower,
listing and comment,
%every listing line={\textcolor{red!40!black}{\ttfamily> }},
%comment={\DefaultMathsDigits\begin{tabular}{l}#1\end{tabular}},
comment={\begin{tabular}{l}#1\end{tabular}}%
}
\begin{document}
\begin{code}{
Fib := proc(n::nonnegint)\\
option remember; system;\\
if $n < 2$ then $n$ else Fib$(n - 1)$ + Fib$(n - 2)$ end if\\
end proc
}
Fib := proc( n :: nonnegint )
option remember, system;
if n<2 then
n
else
Fib(n-1) + Fib(n-2)
end if;
end proc;
\end{code}
\end{document}
我的意思是，在输出中，我如何管理关键字进程，选项，然后，...和上部一模一样吗？
