我正在尝试使用其他帖子中建议的解决方案，在多个单元格周围放置一个矩形。
然而，由于某种原因，我的多个单元格矩形最终超出了表格范围，而我不明白为什么。
这是 MWE：我希望圆角正方形适合爱尔兰行中的 88 和 11-13 左右。
非常感谢。
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& & & \multicolumn{2}{c}{\textbf{\textit{FE\textsuperscript{1}}}} & & \multicolumn{2}{c}{\textbf{\textit{FE\textsuperscript{2}}}} & & \multicolumn{2}{c}{\textbf{\textit{FE\textsuperscript{3}}}} & \\
\cmidrule{2-2} \cmidrule{4-5} \cmidrule{7-8} \cmidrule{10-11}
& \textbf{ Country} & \textbf{} & \textbf{Expansions} & \textbf{Contractions} & \textbf{} & \textbf{Expansions} & \textbf{Contractions} & \textbf{} & \textbf{Expansions} & \textbf{Contractions} & \\
\cmidrule{2-11}
& \multirow{2}[4]{*}{\textbf{Ireland}} & \textbf{} & 01-02, & \tabnode{88,} & & 95, 01-02, & \circletext{88}, & & 95, 01-02, & \circletext{88}, & \\
& & \textbf{} & 07-10 & \tabnode{11-13} & & 07-10 & \circletext{11-13} & & 07-10 & \circletext{11-13} & \\
\cmidrule{2-11}
& \multirow{2}[4]{*}{\textbf{Italy}} & \textbf{} & & 83, 92-94, & & 81, & 82-83, & & 81, & 82-83, & \\
& & \textbf{} & & 12 & & 01 & 92-93, 12 & & 01 & 92-93, 12 & \\
\cmidrule{2-11}
& \multirow{2}[4]{*}{\textbf{Netherlands}} & \textbf{} & 02, & 91, & & 01-02, & 91, 93, & & 01, & 91, 93, & \\
& & \textbf{} & 09-10 & 93 & & 09-10 & 96 & & 09 & 96 & \\
\cmidrule{2-11}
& \multirow{2}[4]{*}{\textbf{Portugal}} & \textbf{} & 78-80, 94, & 83-84, & & 78-79, 85, 93-94, & 83-84, 86, 88, & & 78, 85, 93, & 83, 86, 88, & \\
& & \textbf{} & 09-10 & \circletext{11-13} & & 05, 09-10 & 92, \circletext{11-13} & & 05, 09-10 & 92, \circletext{11-13} & \\
\cmidrule{2-11}
& \textbf{Spain} & \textbf{} & 08-11 & 13 & & 08-09 & 13 & & 08-09 & 13 & \\
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& \textbf{Sweden} & \textbf{} & 02-03 & 96-99 & & 02 & 96-97 & & 02 & 96-97 & \\
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& & \textbf{} & 01-04, 09 & 11-13 & & 01-03, 09 & 11-12 & & 01-03, 09 & & \\
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& \textbf{\# Years with episodes} & \textbf{} & 52 & 62 & & 63 & 61 & & 51 & 50 & \\
& \textbf{Avg duration (years)} & \textbf{} & 1.86 & 2.48 & & 1.62 & 1.65 & & 1.31 & 1.43 & \\
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答案1
（旁注：您的示例并不完全是简约的，其中有很多内容根本没有用到。下面我稍微精简了一些。）
您的代码存在一些问题。首先，您需要定义中的宏和绘制框的环境remember picture,overlay的选项。您还需要放置\tikz\tabnodetikzpicturetikzpicture 里面这\scalebox。
\documentclass{beamer}
\usepackage{multirow}
\usepackage{booktabs}
\usepackage{tikz}
\usetikzlibrary{fit}
\newcounter{nodemarkers}
\newcommand\circletext[1]{%
\tikz[overlay,remember picture]
\node (marker-\arabic{nodemarkers}-a) at (0,1.5ex) {};%
#1%
\tikz[overlay,remember picture]
\node (marker-\arabic{nodemarkers}-b) at (0,0){};%
\tikz[overlay,remember picture,inner sep=3pt]
\node[draw, red, ultra thick, rounded corners,fit=(marker-\arabic{nodemarkers}-a.center) (marker-\arabic{nodemarkers}-b.center)] {};%
\stepcounter{nodemarkers}%
}
\newcounter{nodecount}
% Command for making a new node and naming it according to the nodecount counter
\newcommand\tabnode[1]{\stepcounter{nodecount} \tikz[remember picture,overlay] \node (n\arabic{nodecount}) {#1};}
\begin{document}
\begin{frame}
\scalebox{0.47}{
\begin{tabular}{*{10}{c}}
\toprule
& \multicolumn{2}{c}{\textbf{\textit{FE\textsuperscript{1}}}} & & \multicolumn{2}{c}{\textbf{\textit{FE\textsuperscript{2}}}} & & \multicolumn{2}{c}{\textbf{\textit{FE\textsuperscript{3}}}} \\
\cmidrule{1-1} \cmidrule{3-4} \cmidrule{6-7} \cmidrule{9-10}
\textbf{ Country} & & \textbf{Expansions} & \textbf{Contractions} & & \textbf{Expansions} & \textbf{Contractions} & & \textbf{Expansions} & \textbf{Contractions} \\
\midrule
\multirow{2}[4]{*}{\textbf{Ireland}} & & 01-02, & \tabnode{88,} & & 95, 01-02, & \circletext{88}, & & 95, 01-02, & \circletext{88}, \\
& & 07-10 & \tabnode{11-13} & & 07-10 & \circletext{11-13} & & 07-10 & \circletext{11-13} \\
\bottomrule
\end{tabular}%
\begin{tikzpicture}[overlay,remember picture]
% Define the circle paths
\node[draw=blue,rounded corners = 1ex,fit=(n1)(n2),inner sep = 0pt] {};
\end{tikzpicture}
} % <-- this is the end of the scalebox
\end{frame}
\end{document}