Here are a few options for the description of a WordPress post_tag titled “交互作用” in Traditional Chinese, each with a slightly different focus:

**Option 1: Basic & Informative**

* **Title:** 交互作用 (Jiāohù zuòyòng)
* **Description:** 描述事物之間互相影響或共同作用的關係。包括各種不同事物之間的互動，例如科學、社會及科技領域等。

* **Translation:** Describes the relationship between things that influence each other or act together. Includes interactions between various different things, such as in the fields of science, society, and technology.

* **Why it’s good:** Clear, concise, and covers a broad range of uses for the tag.

**Option 2: Focused on Applications & Context**

* **Title:** 交互作用 (Jiāohù zuòyòng)
* **Description:** 泛指不同元素互相影響及產生的結果。應用於許多領域，包括生物學中的生物互作、化學反應中的物質互動、和人際關係中的社會互動。

* **Translation:** Generally refers to the results produced by the mutual influence of different elements. Applicable to many fields, including biological interaction in biology, the interaction of substances in chemical reactions, and social interaction in interpersonal relationships.

* **Why it’s good:** Gives more context with examples and highlights practical applications.

**Option 3: More Technical & Academic**

* **Title:** 交互作用 (Jiāohù zuòyòng)
* **Description:** 描述系統中各個組成部分之間發生的相互影響和影響效應。涉及輸入、輸出及其之間的關係。常出現在科學研究、統計分析及系統設計等領域。

* **Translation:** Describes the mutual influence and impact effects that occur between the various components of a system. It involves input, output, and the relationship between them. Often appears in the fields of scientific research, statistical analysis, and system design.

* **Why it’s good:** Suitable if the blog content is more academic or technical, and it clarifies the scope for users.

**How to Choose the Best Option:**

* Consider your blog’s typical audience
* Consider the topic of the content it is applied to.
* Think about what keywords/queries people will use.

Remember to put this in the “Description” field of the tag in your WordPress admin panel. Good Luck!