illusion
A phenomenon in which a person perceives something different from what is actually there, even though there is nothing wrong with the sensory organs. It is distinguished from a hallucination, in which a non-existent object is thought to exist.
尽管感觉器官没有任何问题，但人感知到的东西与实际存在的东西不同的现象。它与幻觉不同，幻觉中认为不存在的物体存在。