abstrusity的音標為[??bs??str?s?t?]，基本翻譯為“晦澀難懂”。

速記技巧：ab-strus-tu-si-ty，可以將單詞分解記憶，結合音標快速記憶單詞。

Abstrusity這個詞的詞源可以追溯到拉丁語，意思是“深奧難懂”。它的變化形式包括名詞形式abstruse和形容詞形式abstruse或abstract。

相關單詞：

1. Abstract（抽象的）：這個詞直接來源于abstruse，表示將深奧難懂的內容轉化為易于理解的形式。例如，在科學研究中，我們經常需要將復雜的概念和數據抽象化，以便于他人理解。

2. Abstruse（深奧的）：這個詞通常用來形容那些難以理解或復雜的主題或概念。例如，“這個理論很abstruse，需要深入思考才能理解。”

3. Abstrusely（深奧地）：這是一個副詞形式，用來形容某人的表達方式或某事物的性質是深奧難懂的。例如，“他的論述abstrusely，讓人難以理解。”

以上這些單詞都與abstrusity這個詞源有直接或間接的關系，它們在英語中廣泛使用，并被用來描述那些難以理解或復雜的主題或概念。同時，這些單詞也反映了英語語言在表達抽象和復雜概念時的靈活性和多樣性。

常用短語：

1. in detail 詳細地

2. at random 隨便地

3. in essence 本質上

4. on average 平均起來

5. beyond doubt 毫無疑問

6. in conclusion 總之

7. in terms of 就...而言

雙語例句：

1. Please explain the problem in detail.（請詳細解釋一下這個問題。）

2. I"m writing this letter at random.（我隨便寫這封信。）

3. The essence of the matter is that we should work harder.（問題的本質是我們應該更努力工作。）

4. On average, I spend three hours on homework every day.（平均每天我花三個小時在作業上。）

5. Without doubt, he is the best student in our class.（毫無疑問，他是我們班最好的學生。）

6. In conclusion, I would like to thank you for your help.（總之，我想感謝你的幫助。）

7. We need to think in terms of changing with the times.（我們需要與時俱進地思考問題。）

英文小作文：

Title: The Importance of Being Clear and Simple

Being clear and simple is an essential quality that we should all strive for in our daily lives, whether it"s communicating with others, completing tasks, or making decisions. Abstractness and complexity can often lead to confusion and misunderstandings, which can result in wasted time and energy. Therefore, it"s important to avoid using language that is too technical or abstract and instead use language that is clear and simple, allowing others to easily understand what you"re trying to communicate. When we simplify our communication, we also make it easier for others to build trust and rapport with us, which can lead to better relationships and outcomes in our daily lives. Additionally, being clear and simple can help us avoid making mistakes or errors that could have negative consequences, such as making incorrect decisions or missing key details. Therefore, it"s essential to always strive to communicate in a clear and simple way, both for our own benefit and for the benefit of those around us.