如果行列式 $\left|\begin{array}{lll}a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33}\end{array}\right|=2$ ，则

$$
\left|\begin{array}{lll}
-2 a_{11} & -2 a_{12} & -2 a_{13} \\
-2 a_{21} & -2 a_{22} & -2 a_{23} \\
-2 a_{31} & -2 a_{32} & -2 a_{33}
\end{array}\right|=
$$