। ॥ ४६७ ॥
In plain words
It is on an object already seen, right there in front of you, that people superimpose some other object. You can watch it happen with nacre, with rope, with all such cases — a resemblance, or some link of that kind, is there, and the superimposition takes hold.
Close to the Sanskrit
For indeed, upon an object seen in front, they superimpose another object. That is observed in the case of nacre, rope, and the like, owing to the connection of resemblance and the rest.