delusion的音標為[d??lu??n]，基本翻譯為“錯覺；妄想；欺騙”，速記技巧為：delusion（錯覺）→de（去掉）lu（路）→走偏路→錯覺。

Delusion這個詞的詞源可以追溯到拉丁語“de”和“ludere”，意為“玩弄，欺騙”。它最初的含義是“欺騙性的幻覺”或“錯誤的信念”。

Delusion的變化形式包括過去式和過去分詞的“deluded”，現在分詞的“deluding”，其中“-ing”表示正在進行時。

相關單詞包括：

1. “illusion” - 意為“幻覺，錯覺”，這個詞與“delusion”有相似的含義，但強調的是一種美好的、非真實的幻象。

2. “delight” - 意為“高興，愉快”，這個詞與“delusion”有相近的詞根含義，但強調的是積極的情感。

3. “deduction” - 意為“推斷，演繹”，這個詞與“delusion”有相似的詞根含義，但更強調邏輯推理的過程。

以上這些單詞都與“delusion”有著某種聯系，它們在語義和詞源上都有一定的相似性。同時，這些單詞也反映了英語詞匯的豐富性和多樣性。

常用短語：

1. delusion of grandeur 妄自尊大

2. be under a delusion about 對...有誤解

3. be under a false delusion about 對...有錯誤的看法

4. be under a misapprehension about 對...有誤解

5. be under a misconception about 對...有誤解

6. delusion of truth 真偽不辨

7. delusions of grandeur 妄自尊大

雙語例句：

1. He was under a delusion that he was a great artist.

他認為自己是一個偉大的藝術家，這是錯誤的。

2. She was under a false delusion about her abilities.

她對自己的能力有錯誤的看法。

3. They were under a misapprehension about the true intentions of the government.

他們對政府的真正意圖有誤解。

4. He had been under a delusion about the value of his work.

他對自己的工作價值有誤解。

5. She had delusions of grandeur and thought she was a great actress.

她妄自尊大，認為自己是個偉大的演員。

6. The delusions of the conspiracy theorists are unfounded.

陰謀論者的妄想是無根據的。

7. The evidence is clear that there is no scientific basis for the delusions of the patient.

證據表明，病人的妄想是沒有科學依據的。

英文小作文：

The world is full of delusions, whether it"s a person"s self-image, their beliefs, or even their actions. Sometimes, these delusions can lead us to make mistakes or make decisions that are not in our best interests. However, it"s important to recognize our delusions and question them, because only then can we move forward and become better versions of ourselves.

In my opinion, the most dangerous delusion is the delusion of grandeur, which can lead us to believe that we are better than we really are, and that we can achieve anything we set our minds to. But in reality, we all have our limitations, and it"s only through honest self-reflection and hard work that we can truly achieve our goals. Therefore, I believe that it"s essential to keep an open mind, to question our assumptions, and to always strive to improve ourselves.