illusion

/ˌɪˈluʒən/

an erroneous mental representation

中文释义：错觉；幻觉

The mirror creates an optical illusion that makes the room appear larger.

镜子产生了一种视错觉，使房间看起来更大。

Many people have the illusion that wealth alone brings happiness.

许多人错误地认为财富本身就能带来幸福。