重定义\caption命令，现在的格式为\caption{英文}{中文}

    \makeatletter
    \setlength\abovecaptionskip{3\p@}
    \long\def\@caption#1[#2]#3#4{%
     \par
     \addcontentsline{\csname ext@#1\endcsname}{#1}%
       {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}%
     \begingroup
       \@parboxrestore
       \if@minipage
         \@setminipage
       \fi
       \normalsize
       \@makecaption{\csname fchnnum@#1\endcsname}{\ignorespaces #4}
       \@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3} \par
     \endgroup}
    \renewcommand{\tablename}{Table}
    \newcommand{\tablechnname}{表}
    \def\fnum@table{\tablename\nobreakspace\thetable}
    \def\fchnnum@table{\tablechnname\nobreakspace\thetable}
    \renewcommand{\figurename}{Figure}
    \newcommand{\figurechnname}{图}
    \def\fnum@figure{\figurename\nobreakspace\thefigure}
    \def\fchnnum@figure{\figurechnname\nobreakspace\thefigure}
    \makeatother