darkens的音標是[dɑ?k?nz]，基本翻譯是“使變暗；使變深”，速記技巧是“dark暗的+ en+ s使…”。

"darkens" 這個詞的英文詞源可以追溯到拉丁語 "tardus"，意為緩慢的或遲鈍的。它的變化形式包括 "darkened"（暗淡的）和 "darkness"（黑暗）。

相關單詞：

"dark"：這個詞在英語中表示黑暗或暗淡，其詞源同樣來自拉丁語 "tardus"。它也有形容詞和名詞的形式，可以用來描述顏色、情緒或狀態。例如，“She wore a dark dress to match her mood.”（她穿著一件暗色的裙子，以匹配她的情緒。）

"enlighten"：這個詞意為“啟發”或“使明亮”，其詞源是拉丁語 "illuminare"，意為“照亮”或“啟發”。這個詞通常用來描述教育、啟發或啟示的過程。例如，“The teacher enlightened us on the importance of reading.”（老師啟發我們閱讀的重要性。）

"obscure"：這個詞意為“模糊的”或“晦澀的”，其詞源是拉丁語 "obscurus"，意為“模糊不清的”。這個詞通常用來描述難以理解或難以描述的事物。例如，“The poem is obscure and requires further interpretation.”（這首詩晦澀難懂，需要進一步解釋。）

以上這些單詞都與 "darkens" 相關，因為它們都與黑暗、暗淡或模糊有關。這些單詞在英語中都有很廣泛的使用，并且可以用來描述各種不同的情境和概念。

至于字數要求，由于您要求不少于100字，我將簡要描述一下這些單詞在英語中的使用情況，以及它們如何與 "darkens" 這個詞相關。例如，“darkens”可以用來描述物體逐漸變暗或變得不清晰，而與之相關的單詞則可以用來描述黑暗、暗淡或模糊的狀態和情境。這些單詞在英語中都有很廣泛的使用，并且可以用來描述各種不同的情境和概念。它們在文學、科學、藝術等領域都有重要的應用。

常用短語：

1. darken up

2. darken one"s face

3. darken one"s mood

4. darken one"s thoughts

5. darken the room

6. darken the mood

7. darken the atmosphere

例句：

1. His face darkened as he realized he had made a mistake.

2. The room darkened as the sun set.

3. Her mood darkened as she thought about her failed exam.

4. The thought of failure darkened his thoughts.

5. The dim lighting darkened the room.

6. The atmosphere in the room darkened with tension.

7. The clouds darkened the sky, threatening rain.

英文小作文：

Light and Darkness

Light and darkness are two opposing forces that shape our world and our lives. Light brings brightness, warmth, and life, while darkness brings shadows, coldness, and death. When the sun sets, the room darkens, and our moods often follow suit. But just as darkness can be a temporary thing, so too can our moods be lifted by the simple act of light. We can brighten up our lives by embracing the light, even when it"s dim or hidden by clouds, and by recognizing that darkness will eventually give way to light once again. In this way, we can learn to embrace both light and darkness, knowing that they are both essential to life and to growth.