latex表格实现文本自动换行

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\begin{table*}[]     \centering     \begin{tabular}{cclll}     \hline   Method & Metric form  & Ideas & Solvers  & Reg.  \\   \hline    Global DML      & Complete PSD matrix                 & \parbox[c]{4cm}{Maximizing the sum of distances between dissimilar points while keeping the distances between similar examples small.}  & \parbox[c]{2cm}{Projected gradient descent; Eigenvalue decomposition.} & No  \\    \hline    LMNN & Complete PSD matrix& \parbox[c]{4cm}{Local large margin nearest neighborhood; \\ Slack constraints.} &\parbox[c]{2cm}{ Sub-gradient descent.}& No   \\     \end{tabular}     \caption{Caption}     \label{tab:my_label} \end{table*}

　　采用\parbox命令，使用方法\parbox{c}{4cm}{text},   以上latex表格显示结果如下：