Here are a few options for the description of the WordPress post tag “青少年” (Teenagers) in Traditional Chinese, ranging in tone and specificity:

**Option 1: Short and Simple (General Use)**

> 青少年。 涵蓋本站關於青少年相關的所有文章。
>
> Translation: Teenagers. This tag includes all articles related to teenagers on this site.

**Option 2: Slightly More Descriptive (Adding Focus)**

> 青少年： 探索專為青少年設計的文章、指南、資源和資訊。
>
> Translation: Teenagers: Explore articles, guides, resources, and information designed specifically for teenagers.

**Option 3: Emphasizing Issues (If the site discusses teenage issues)**

> 青少年： 涵蓋青少年成長、教育、心理健康、社交、文化等方面的議題討論。
>
> Translation: Teenagers: Covering discussions on topics related to adolescent growth, education, mental health, social life, culture, and more.

**Option 4: Focusing on the audience (Targeting the teenage user)**

> 青少年： 專為青少年朋友設計，提供各種有趣、實用且有用的資訊！
>
> Translation: Teenagers: Designed specifically for teenage friends, providing all sorts of interesting, practical, and helpful information!

**Option 5: A bit more formal and comprehensive**

> 此標籤涵蓋與青少年相關的各類議題，包括教育、健康、社會、文化等層面。希望透過內容，關懷並支持青少年族群的成長與發展。
>
> Translation: This tag covers various issues related to teenagers, including education, health, society, culture, and other aspects. It is hoped that through the content, the growth and development of the teenage population can be cared for and supported.

**Key things to consider when choosing the best option:**

* **Your website’s focus:** Does your site primarily offer resources for teens, discuss teenage issues, or something else?
* **Your target audience:** Are you aiming to engage with teens directly, or primarily their parents/educators?
* **The overall tone of your website:** Formal or informal?
* **SEO (Search Engine Optimization):** Consider adding relevant keywords, although brevity is often preferred for tag descriptions.

Choose the description that best fits your needs and the character limit. Good luck!