N-COUNT
假象;幻象
An illusion is something that appears to exist or be a particular thing but does not actually exist or is in reality something else.
例句
Floor-to-ceiling windows can give the illusion of extra height...
从地板直抵天花板的窗子会给人以高出实际距离的幻觉。
This eerie calm is an illusion.
这种怪诞的平静是一种假象。