Down at the very base of it, there's fiber optics that work better than ours, actually, to move light, but you can tie them in a knot; they're incredibly flexible.
它身体最底部有光纤，这些就是光纤。 这种光纤传播光线的效果比人造光纤还要好。 而且还可以打结；这种光纤弹性相当好。