\definecolor{ublue}{rgb}{0.152,0.250,0.545}
\definecolor{ugreen}{rgb}{0,0.5,0}

%%% outline
%-------------------------------------------------------------------------

\vspace{0.3em}
\begin{tikzpicture}

\begin{scope}
\node [] (input) at (-0.6em,0) {{\scriptsize 猫喜欢吃鱼}};

\node [] (output) at ([xshift=3.35in]input.east) {{\scriptsize Cats like eating fish}};

\draw[->,thick] ([xshift=-1pt]input.east) -- ([xshift=8pt]input.east);
\draw[->,thick] ([xshift=-6pt]output.west) -- ([xshift=2pt]output.west);

%{
%\draw[->,thick] ([xshift=-12pt]mtengine.west) -- ([xshift=-2pt]mtengine.west);
%\draw[->,thick] ([xshift=2pt]mtengine.east) -- ([xshift=12pt]mtengine.east);
%}

{
\node[minimum height=4em,minimum width=4.5em,fill=white] (inputmarking) at (0.88in,-0.39in) {};
\node[minimum height=4em,minimum width=5.2em,fill=white] (outputmarking) at (2.57in,-0.39in) {};
}

\node [anchor=south] (inputlabel) at ([yshift=-0.5em]input.north) {{\scriptsize \color{red}{\textbf{输入}}}};
\node [anchor=south] (outputlabel) at ([yshift=-0.5em]output.north) {{\scriptsize \color{red}{\textbf{输出}}}};

{
\node [anchor=west] (mtinputlabel) at ([xshift=0.35in]inputlabel.east) {{\scriptsize \color{red}{\textbf{}}}};
\node [anchor=west] (mtoutputlabel) at ([xshift=0.88in]mtinputlabel.east) {{\scriptsize \color{red}{\textbf{}}}};
\node[rectangle,draw=ublue, inner sep=0mm] [fit = (mtinputlabel) (mtoutputlabel) (inputmarking) (outputmarking)] {};
}

{
\node[rectangle,fill=ublue,inner sep=2pt] [fit = (mtinputlabel) (mtoutputlabel) (inputmarking) (outputmarking)] {{\color{white} \textbf{\Large{机器翻译系统}}}};
}


%\begin{scope}[scale=0.9,xshift=1.2in,yshift=-1.2in,level distance=20pt,sibling distance=0pt]
%
%\end{scope}

\end{scope}

\end{tikzpicture}