Here are a few options for a WordPress post_tag description, written in Traditional Chinese, for the tag “應英系” (Yīng Yīng Xì – English Department):

**Option 1 (Concise and Direct):**

> 適用於有關本系所學、活動、以及相關資訊的文章。 (Applicable to articles about the department’s studies, activities, and related information.)

**Option 2 (More Descriptive):**

> 標記與本校英文系相關的文章，包含課程介紹、學生活動、教授研究、升學就業資訊分享等。 (Tag for articles related to the [University’s Name] English Department, including course introductions, student activities, professor research, information sharing on further studies and employment.)

**Option 3 (Emphasis on Community):**

> 聚焦於應英系，分享系上大小事，集結學術研究、課外活動、師生互動等內容。 歡迎大家一起關注！ (Focusing on the English Department, sharing everything about the department, including academic research, extracurricular activities, and interactions between teachers and students. Welcome everyone to follow along!)

**Option 4 (Short and Sweet):**

> 任何與應英系相關的文章，都將使用此標籤。 (This tag will be used for any articles related to the English Department.)

**When choosing, consider:**

* **Your audience:** Who is reading your blog? Are they students, alumni, or the general public?
* **The content of your blog:** Does your blog focus on course content, events, or a broader range of topics?
* **Your overall tone:** Do you want to be formal, informal, or a little bit of both?

You can also customize these options to fit your specific needs. Remember to use Traditional Chinese characters. Good luck!