I'm a hippo . I'm small .
I am strongly ________ keeping animals in the zoo, because I think animals should also have the right to enjoy freedom.
已知点A的坐标为(2,3),O为坐标原点,连结OA,将线段OA绕点O按逆时针方向旋转90o得OA1,再将点A1作关于X轴对称得到A2,则A2的坐标为( )