acuteness 的音標是[??kju?tn?s]，基本翻譯是“敏銳，靈敏”。

速記技巧是：可以利用詞根記憶法來快速記住這個單詞，acuteness的意思是“敏銳”或“靈敏”，其中“acute”表示“尖銳的，敏銳的”，ness表示“……性”。因此，可以聯想記憶為“尖銳的程度”。

Acutance這個詞在英文中通常被解釋為“敏捷，迅速”的意思。這個詞的詞源可以追溯到拉丁語“acutus”和“cunctus”，這兩個詞分別表示“銳利的”和“一次的”。

變化形式：

1. Accute（形容詞形式，表示“尖銳的，敏銳的”）

2. Accumulate（動詞形式，表示“積累，堆積”）

相關單詞：

1. Accelerate（加速） - 詞源同acutance，表示加快速度。

2. Efficient（高效的） - 詞源同acutance，表示敏捷、有效率的。

3. Swift（快速的） - 詞源同acutance，表示敏捷、迅速的。

4. Agile（敏捷的） - 詞源同acutance，表示靈活、機敏的。

5. Flicker（閃爍） - 詞源同acutance，表示快速、閃爍的動作。

6. Vigilant（警惕的） - 詞源同acutance，表示警覺、警惕的狀態。

7. Evasive（逃避的） - 詞源同acutance，表示敏捷地逃避、避免。

8. Rash（輕率的） - 詞源同acutance，表示輕率、魯莽的行為。

9. Swiftly（迅速地） - 詞源同acutance和ly，表示迅速地做某事。

10. Acceleration（加速度） - 詞源同acutance和lation，表示速度的變化或增加。

以上這些單詞都與“敏捷”、“迅速”這一核心含義有關，并且都反映了acutance這個詞在英語中的廣泛應用和深遠影響。

常用短語：

1. acute angle 銳角

2. acute injury 急性損傷

3. acute infection 急性感染

4. acute pancreatitis 急性胰腺炎

5. acute attack 急性發作

6. acute phase 急性期

7. acute illness 急性疾病

例句：

1. The doctor quickly diagnosed an acute infection in his throat.

2. She suddenly felt pain in her knee after a sudden movement, it was an acute injury.

3. The patient"s condition worsened with an acute pancreatitis.

4. He had an acute attack of chest pain and was rushed to the hospital.

5. The patient is currently in the acute phase of the illness and needs constant care.

6. He recovered quickly from his acute illness and was able to return to work soon after.

7. We must take immediate action to prevent an outbreak of acute infection in our community.

英文小作文：

Acute Infection: A Serious Threat to Health

Acute infection is a common yet serious condition that requires immediate medical attention. It usually occurs suddenly and can lead to severe pain, discomfort, and even death if not treated promptly.

One example is acute pancreatitis, which can cause severe abdominal pain and other symptoms that require immediate hospitalization. Another example is acute respiratory infection, which can lead to coughing, shortness of breath, and even pneumonia if left untreated.

Preventing acute infection is crucial. Good hygiene practices, including frequent hand washing and avoiding close contact with people who are sick, can help prevent the spread of infection. If you experience any symptoms of acute infection, seek medical attention promptly to ensure a speedy recovery.