demersal的音標為：[d??m??rs(?)l] ，中文釋義為“底棲的”。

其速記技巧為：利用諧音記憶法，可將該詞諧音理解為“的摸死餓”，即“底層餓死”。

使用這種方法時要結合例句和情景，以便更好地理解和記憶。

Demersal這個詞的詞源可以追溯到拉丁語，意為“在淺水下的”。它的變化形式包括過去式（demersed）、過去分詞（demersed）和現在分詞（demersing）。

相關單詞：

demerger：分離，分解

demerit：缺點，過失

demerging：分拆，拆分

demerging stock：分拆上市的股票

demurge：擔保人，保證人

demurrage：滯期費，延期費

這些單詞都與“在淺水下”這一概念有關，可以用來描述海洋生物、海洋環境、海洋資源等相關的主題。例如，demerging指的是將一個公司或業務從母公司中分離出來，而demerit則可以用來描述某種行為或特點的缺點或不足之處。

常用短語：

1. demersal waters：海底水域

2. demersal fish：底棲魚類

3. bottom-dwelling：底棲生活

4. scavenger：食腐動物

5. marine life：海洋生物

6. marine environment：海洋環境

7. oceanography：海洋學

雙語例句：

1. The fish in demersal waters are vulnerable to predators. 海底水域的魚類容易成為捕食者的獵物。

2. Marine life is essential to the health of the ocean ecosystem. 海洋生物對海洋生態系統的健康至關重要。

3. The demersal fish species in this area are mostly carnivorous. 這個地區的底棲魚類大多數是食肉動物。

4. The marine environment is facing increasing threats from pollution and overfishing. 海洋環境正面臨著污染和過度捕撈帶來的日益嚴重的威脅。

5. Marine scientists study oceanography to better understand the planet"s ecosystem. 海洋學家研究海洋學以更好地了解地球生態系統。

6. The ocean covers over 70% of the Earth"s surface, yet we know so little about its hidden depths. 海洋覆蓋了地球表面的70%以上，但我們對其深處的了解卻少之又少。

7. The scavengers in the ocean play an important role in recycling dead organisms and maintaining the balance of the ecosystem. 海洋中的食腐動物在回收死亡生物體和維持生態系統平衡方面發揮著重要作用。

英文小作文：

Title: The Mysteries of the Deep Sea

Deep down in the ocean, beyond the surface layers where most of us spend our time, lies a mysterious world full of wonders and surprises. The deep sea is home to a diverse array of marine life, from giant squids to mysterious creatures that have yet to be identified by science. But what makes this environment so unique is its extreme environment, where temperatures can reach thousands of degrees and pressures are many times greater than on the surface. Despite these challenges, the deep sea is a thriving ecosystem that is essential to the health of the ocean overall. From its unique inhabitants to the way they interact with each other and with their environment, the deep sea holds many secrets that still need to be discovered and understood. I hope to explore this mysterious world further in my future research and studies, and to shed light on its many wonders for a wider audience.