extensiveness的音標是[?k?stens?v?s]，意思是范圍廣、伸展性、擴展性。記憶技巧是可以通過諧音“愛克斯替身維克斯”來幫助記憶。可以聯想一個場景，比如在數學課上老師在講關于擴展性的問題，這樣可以幫助加強記憶。

Extensiveness這個詞的英文詞源可以追溯到拉丁語“extensio”，意為“伸展”。它的變化形式包括“extensive”、“extens”和“extensible”。

相關單詞：

Extensive：形容詞，意為“廣闊的，廣泛的”。例如，我們可以說一個extensive area of land（廣闊的土地）。

Extens：名詞，意為“延伸”。例如，在科學研究中，我們可能會對某個過程進行extens分析。

Extensible：形容詞，意為“可延伸的，可擴展的”。例如，一個extensible array（可擴展的數組）可以被添加或刪除元素而保持不變。

具體來說，extensiveness這個詞描述的是事物向外延伸的程度，它強調的是空間或時間的廣度。這個詞在描述某些現象時非常有用，比如在討論氣候變化、地理學、生物學等學科時。同時，這個詞也反映了人類對未知世界的探索欲望，我們總是希望了解更多，擴大我們的視野。

常用短語：

1. Extensive coverage

2. Extensive knowledge

3. Extensive research

4. Extensive resources

5. Extensive experience

6. Extensive network

7. Extensive scope

例句：

1. This book provides extensive coverage of various fields.

2. She has extensive knowledge of foreign languages.

3. The research team conducted extensive interviews with local residents.

4. The company has extensive resources to support its operations.

5. His extensive experience in the field of business management helped him succeed.

6. His network extends across the country, providing him with excellent contacts.

7. The project has a wide scope, involving various aspects of social and economic development.

英文小作文：

The Importance of Extensiveness in Our Life and Work

In our daily lives and professional pursuits, it is essential to be well-versed in a wide range of topics and issues. Extensiveness plays a vital role in helping us stay informed, make informed decisions, and excel in our endeavors.

Whether it is learning a new skill, managing a business, or simply staying connected with friends and family, having a broad knowledge base and a wide network of resources helps us achieve our goals more effectively. In the fast-paced world we live in, being well-versed in multiple fields ensures that we are always up-to-date with the latest trends and developments, and are well-prepared to handle various challenges that come our way.

Moreover, extensive research and analysis help us identify opportunities that others may miss, and formulate effective strategies to address various challenges. It also enables us to collaborate effectively with others, build strong relationships, and create synergies that lead to greater successes.

Therefore, it is essential to cultivate an attitude of learning and exploration, expand our horizons, and constantly seek out new opportunities and experiences that will help us grow and excel in our lives and work. By doing so, we can be sure to achieve greater success and satisfaction in all that we do.