※\labelenumii
とenumii
のiの数に注意!
例
\begin{enumerate}
\renewcommand{\labelenumii}{(\ref{item1}-\arabic{enumii})}
\item \label{item1} {Hoge Hoge.}
\begin{enumerate}
\item{Piyo Piyo.}
\item{Buf Buf.}
\item{I don't want to work any more.}
\end{enumerate}
\item{meu meu.}
\end{enumerate}
出力結果
(1) Hoge Hoge.
(1-1) Piyo Piyo.
(1-2) Buf Buf.
(1-3) I don’t want to work any more.
(2) meu meu.