illusion

一个小小的瑕疵就能打破完美的幻象。

A single flaw can shatter the ___illusion of perfection.

我曾错误地认为公交服务非常可靠。

I was under the ___illusion that the bus service was very reliable.

墙上的大镜子制造出房间大得多的错觉。

The large mirror on the wall creates the ___illusion of a much bigger room.