additivity 的音標是[??d?s?t?t?v?t?]，基本翻譯是“累積性，增加性”。

速記技巧：add+additivity=增加性。

Additivity 的英文詞源是拉丁語 additus，意為“添加的”。它的變化形式包括 adjective（形容詞）、adverb（副詞）、adjective participle（形容詞分詞）等。相關單詞包括 addition（添加）、additionally（另外地）、addict（上癮）、address（地址）、addictive（上癮的）、addictive behavior（上癮行為）等。

Additivity 在英語中通常指多個因素或成分的累積效應，即多個因素同時存在并產生影響。這個詞在心理學、社會學、經濟學等領域都有廣泛的應用，因為它可以幫助我們更好地理解和分析復雜的社會現象和行為。

總的來說，additivity 是一個具有豐富內涵的英語詞匯，它反映了人類社會中多樣性和復雜性的特點，同時也為我們的研究提供了有力的工具。

常用短語：

1. add to

2. add up

3. add up to

4. addictive behavior

5. additional cost

6. additive effect

7. additive value

雙語例句：

1. Adding salt to food adds flavor.

2. The extra workload added up to a huge pressure.

3. His addictive behavior led to his failure in the exam.

4. The additional cost of the project is beyond our budget.

5. The additive effect of exercise and healthy eating leads to better health outcomes.

6. The value of a good friend is not measured by their wealth, but by their loyalty and additivity.

7. The joy of spending time with family is greater than the sum of its parts.

英文小作文：

Additivity: The Power of Together

Additivity is the power of togetherness, the joy of sharing experiences, the happiness of companionship, and the value of collective effort. It is the essence of community, the glue that binds us together, and the force that drives us forward.

In our lives, we encounter moments where the sum of our parts is greater than the whole. It could be the joy of a group of friends laughing together, the satisfaction of working together to achieve a goal, or the happiness of spending time with family. These moments are fleeting, but they leave a lasting impact on us, reminding us that togetherness is more powerful than any individual effort.

Additivity is not just about numbers or quantity, but about quality and meaning. It is about connecting with others, about feeling understood and understood by others, about sharing our experiences and learning from each other. It is about creating something beautiful out of nothing, about making a difference in someone else"s life, and about realizing our own potential by working together.

Additivity is not just a concept, but a way of living, a way of being, and a way of loving. It is about appreciating the moments that make life worth living, about cherishing the people who make life worth living, and about realizing that togetherness is the key to unlocking our full potential and realizing our dreams.