%%% outline %------------------------------------------------------------------------- \begin{tabular}{l | l | l}
句子长度$m$ & 单词翻译候选数量$n$ & 译文数量$n^m \cdot m!$ \\ \hline
1 & 1 & 1 \\ 1 & 10 & 10 \\ 2 & 10 & 200 \\ 10 & 10 & 36288000000000000 \\ 20 & 10 & 2.43290200817664 $\times 10^{38}$ \\ 20 & 30 & 8.48300477127188 $\times 10^{47}$ \\ \end{tabular} %---------------------------------------------------------------------
