永远固定 meaning in Chinese

permanent set

We were figures in the same plot, eternally fixed together .
我们是同一个图案里的人物，已被永远固定在一起。
Long before the pup was weaned , the kids secretly began calling him scampy , and before i knew it he had become as much a fixture as the fireplace . and just as immovable
早在小狗断奶之前，孩子们已经偷偷地管它叫"小淘气" ；我还没有明白过来，小狗已经像我们家壁炉似地永远固定在那儿，成为家庭不可分割的一员。