extremities的音標為：[?k?stri?m?t?z] ，中文翻譯為“四肢”。

速記技巧：ext-rem-i-t-s。其中ext表示“四肢”的意思，rem表示“剩余”的意思，i表示個體，ts表示“肢體”的意思。這樣組合起來記，可以更快速地記住這個單詞的意思和拼寫。

Extremities這個詞的詞源可以追溯到拉丁語extremitas，意為“極端，盡頭，末端”。它的變化形式主要有復數形式extremities，過去式extremated和過去分詞extremated。

相關單詞：

1. limbs - 肢體，四肢：這個詞和extremities同源，都表示身體的一部分。

2. terminal - 終端，末端的：這個詞也表示末端，常用于指計算機或通信網絡的終端設備。

3. edge - 邊緣，邊：這個詞也表示末端，常用于描述物體的邊緣。

4. tip - 尖端，頂端：這個詞也表示末端，常用于描述物體的尖端或頂端。

5. extremist - 極端主義者：這個詞表示極端觀點或行為的持有者。

6. acute - 尖的，敏銳的：這個詞來源于拉丁語的extremus，意為“極端”，引申為“尖的，敏銳的”。

7. border - 邊界，邊境：這個詞也表示邊緣，但更常用于指地理上的邊界。

8. margin - 邊緣，余地：這個詞也表示末端或邊緣，常用于指紙張的邊緣或利潤的余地。

9. extremude - 極端程度：這是一個合成詞，由extremity和degree組成，表示極端程度的衡量或比較。

10. extremity - 極端，危急狀態(tài)：這個詞直接來源于extremitas，表示極端的或危急的狀態(tài)。

常用短語：

1. extremities tremble

2. at the extremes

3. to the extreme

4. extremity of cold

5. extremity of hunger

6. to the very extremity

7. extremities in danger

例句：

1. His body was shaking with cold, his extremities trembling.

2. She was at the extreme end of her tether, feeling completely exhausted.

3. They pushed their limits to the extreme, testing their endurance and strength.

4. She was feeling the extremity of hunger, her stomach growling loudly.

5. The situation was at the very extremity of danger, with no hope of rescue.

6. We must not go to the extremes in our actions, but rather maintain a moderate approach.

7. She was so weak that her extremities were in danger of going numb.

英文小作文：

When it comes to extremities, I have experienced my fair share of pain and discomfort. Whether it was a severe illness or a long-term injury, I have learned that it is important to take care of my body and respect its limits. I have also learned that it is essential to maintain a healthy lifestyle and avoid unhealthy habits that can harm my body and extremities.

However, I believe that extremities are not only physical but also emotional and mental. We all have our moments of weakness and need to lean on our support system when we are feeling overwhelmed or defeated. It is important to maintain a positive mindset and stay focused on our goals, even when faced with challenges and obstacles.

In conclusion, extremities are a part of life that we cannot avoid, but we can take care of ourselves and maintain a healthy lifestyle to avoid pain and discomfort. At the same time, we should also focus on our emotional and mental well-being to ensure that we are able to cope with any challenges that life may throw at us.