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have the illusion that ...
He had the illusion that he was invincible.
他有种错觉，认为自己不可战胜。
错误观念；错觉；幻想
先理解核心含义，再看它在真实句子里的用法。
错误观念；错觉；幻想
A false idea or belief, especially one shared by many people.
He had the illusion that he was invincible.
他有种错觉，认为自己不可战胜。
错觉；幻觉
A distortion of sensory perception where real stimuli lead to a false or misleading impression of reality.
错误的心理表征
an erroneous mental representation
误解；错误的信念
A misapprehension; a belief in something that is in fact not true.
许多人相信但实际上是错误的事物
something many people believe that is false
The magician created the illusion that a rabbit had disappeared into thin air.
魔术师制造了一种错觉，仿佛兔子凭空消失了。
AI contextual example
She cherished the illusion that he would one day change his ways.
她怀有幻想，认为他总有一天会改变自己的方式。
AI contextual example
Optical illusions often reveal how our brains can misinterpret visual information.
视错觉常常揭示我们的大脑如何错误地解读视觉信息。
AI contextual example
they have the illusion that I am very wealthy
他们有一种错觉,认为我非常富有。
WordNet
He had the illusion that he was invincible.
他有种错觉，认为自己不可战胜。
常描述错误信念。
She is under the illusion that everyone agrees with her.
她误以为大家都同意她的看法。
The mirror creates the illusion of a larger room.
镜子营造出房间更大的错觉。
Not this
That is just an illution.
Use this
That is just an illusion.
拼写错误：'illusion' 的正确拼写是 -sion 而非 -tion。
Not this
He made an illusion to a famous book.
Use this
He made an allusion to a famous book.
词义混淆：'illusion' 意为幻觉，'allusion' 意为暗指。应使用'allusion'来表达间接提及。
Not this
I have illusion about my future.
Use this
I have an illusion about my future.
可数名词用法：'illusion' 是可数名词，需加不定冠词或复数形式。此处应加'an'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
视觉错觉
The pattern creates an optical illusion of movement.
这个图案产生了运动的视觉错觉。
制造错觉
Mirrors can create an illusion of space in a small room.
镜子可以在小房间里制造空间的错觉。
错误地认为
He was under the illusion that money would solve all his problems.
他错误地认为金钱能解决他所有问题。
打破幻想
A sudden noise broke the illusion of solitude.
突然的噪音打破了独处的幻想。
选择的错觉
The menu gives an illusion of choice, but all options are similar.
菜单给人一种选择的错觉，但所有选项都很相似。
抱有错觉
He is under the illusion that money solves everything.
他抱有金钱能解决一切的错觉。
对…不抱幻想
I have no illusions about the difficulty of this job.
我对这份工作的难度不抱幻想。
给人以…的假象
The mirrors give the illusion of a larger room.
镜子给人一种房间更大的假象。
Use illusion naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Ill（病）+ vision（视觉）合成illusion，病中视觉扭曲产生错觉。
中性语境：日常交流与学术写作均可。备注：通常用于描述视觉或认知上的错误认知，在口语和书面语中都比较常见。
The words delusion, confusion, and collusion rhyme with illusion (stressed vowel /uː/ and ending /ʒən/). Note that vision and television share the spelling pattern 'sion' but have different stressed vowels (/ɪ/ vs /uː/).
Dictionary facts from ECDICT, WIKTIONARY.