In this Stegosaurus skeleton, the pubis and ischium both point backwards.

在这个剑龙骨架中，耻骨和坐骨都指向后方。

And that's because the muscles rearrange themselves because they're not moving in the same kind of way and so in an Ornithischian dinosaur, the pubis reorientates itself so that it's back beside the ischium.

那是因为肌肉会重新排列，因为它们没有以相同的方式运动，所以在鸟臀目恐龙中，耻骨会重新定位，使其回到坐骨旁边。