fiend的音標為[fi?nd]，基本翻譯為“惡魔；魔鬼；惡劣的人；困境”。

速記技巧：fi-end，注意字母e在音標中的發音為/e?/。

Fiend這個詞的詞源可以追溯到古英語，意為“惡魔”或“魔鬼”。它的變化形式包括復數形式“fiends”，過去式“fended”和過去分詞“fended”。

相關單詞：

“satanic”意為“撒旦的”，源自fiend，表示邪惡、惡魔般的。

“hellish”意為“地獄般的”，也源自fiend，表示邪惡、恐怖。

“frenzy”意為“瘋狂”，源自fiend的過去式fended，表示瘋狂的狀態。

“inferno”意為“地獄”，源自fiend的復數形式fiends，表示火焰燃燒的地方。

“demoniac”意為“惡魔般的”，源自fiend的另一個形式，表示邪惡、惡魔般的特質。

“demon”意為“惡魔”，也源自fiend，表示邪惡的存在。

“fiendish”意為“像惡魔般的”，表示非常惡劣、殘忍或難以忍受。

“fiendishly”是一個副詞，用來形容行為或性格像惡魔般惡劣。

“fiendishness”是一個名詞，表示惡魔般的特質或行為。

以上這些單詞都與fiend這個詞源有密切的聯系，并且可以用來描述邪惡、惡魔般的特質或行為。

Fiend 常用短語：

1. fiendishly clever (adj) - 極其聰明

2. be hell-bent on (v) - 堅決要做

3. be hell-bent on doing (v) - 堅決要做某事

4. be hell-bent on achieving (v) - 堅決要達成某事

5. be hell-bent on revenge (v) - 堅決要報復

6. be hell-bent on revenge (noun) - 報復的決心

7. fiendish (noun) - 魔鬼般的特質

例句：

1. He is a fiendishly clever student who always strives for excellence.

2. She was hell-bent on achieving her goal of becoming a doctor.

3. He was hell-bent on revenge for the insult he had suffered.

4. The fiendishly cunning enemy managed to outwit us at every turn.

5. She is hell-bent on helping those in need, no matter what the cost.

6. He is a fiendishly talented musician who can captivate an audience with his music.

7. I am determined to succeed, no matter what the obstacles, because I am hell-bent on achieving my goals.

英文小作文：

Fiendishly clever students are always interesting to observe. They are not afraid of challenges and always strive for excellence, even if it means putting in extra effort or making sacrifices. These students are not easily satisfied with what they have, but always look for ways to improve themselves and their surroundings. They are passionate about what they do and are willing to put in the effort necessary to achieve their goals. Fiendishly clever students are also very determined, and they are not easily swayed by negative influences or setbacks. They are able to stay focused and persevere through tough times, knowing that they have the ability to overcome any obstacle in their path. In conclusion, fiendishly clever students are not only intelligent, but also determined, passionate, and resilient individuals who are able to achieve their goals through hard work and perseverance.