要在表格单元格中将文本AB更改为A \r B，请将其放入单元格位置:\makecell{A \\ B}。

在此之前，还需要包含包makecell。

如果你想要包装你的文本，但保持对齐，那么你可以包装单元格在一个迷你页面或varwidth环境(varwidth来自varwidth包)。Varwidth将“与内容一样宽，但不超过X”。您可以创建一个自定义列类型，它的作用类似于“p{xx}”，但是使用

\newcolumntype{M}[1]{>{\begin{varwidth}[t]{#1}}l<{\end{varwidth}}}

这可能需要数组包。然后当你使用像\begin{tabular}{llM{2in}}这样的东西时，前两列我们是正常的左对齐，第三列将是正常的左对齐，但如果它超过2in，那么文本将被换行。

简单得像一块蛋糕!

你可以定义一个新的列类型，比如(L)，同时保持当前的对齐(c, r或L):

\documentclass{article}
\usepackage{array}
\newcolumntype{L}{>{\centering\arraybackslash}m{3cm}}

\begin{document}

\begin{table}
    \begin{tabular}{|c|L|L|}
        \hline
        Title 1 & Title 2 & Title 3 \\
        \hline 
        one-liner & multi-line and centered & \multicolumn{1}{m{3cm}|}{multi-line piece of text to show case a multi-line and justified cell}   \\
        \hline
        apple & orange & banana \\
        \hline
        apple & orange & banana \\
        \hline
    \end{tabular}
\end{table}
\end{document}

\begin{table}
 \caption{ Example of force text wrap}
 \begin{center}
  \begin{tabular}{|c|c|}
   \hline
   cell 1       &   cell 2 \\   \hline
   cell 3                &       cell 4 & & very big line that needs to be wrap. \\ \hline
   cell 5       &   cell 6 \\   \hline
  \end{tabular}
  \label{table:example}
 \end{center}
\end{table}

我喜欢表格包的简单性:

\usepackage{tabulary}
...
\begin{tabulary}{\linewidth}{LCL}
    \hline
    Short sentences      & \#  & Long sentences                                                 \\
    \hline
    This is short.       & 173 & This is much loooooooonger, because there are many more words.  \\
    This is not shorter. & 317 & This is still loooooooonger, because there are many more words. \\
    \hline
\end{tabulary} 

在本例中，您根据\textwidth来安排表的整个宽度。比如0.4。然后其余的工作由包自动完成。

大部分示例摘自http://en.wikibooks.org/wiki/LaTeX/Tables。

另一种选择是在每个需要文本换行的单元格中插入一个迷你页，例如:

\begin{table}[H]
\begin{tabular}{l}
\begin{minipage}[t]{0.8\columnwidth}%
a very long line a very long line a very long line a very long line
a very long line a very long line a very long line a very long line
a very long line a very long line a very long line %
\end{minipage}\tabularnewline
\end{tabular}
\end{table}