Here are a few descriptions for the WordPress post tag “借書” (borrowing books) in Traditional Chinese, catering to different focuses:

**1. Simple & Direct:**

> 借書相關的文章，分享借閱圖書、文獻的經驗、技巧，以及圖書館的使用指南。

> *Translation:* Articles related to borrowing books, sharing experiences and techniques of borrowing books and documents, and guides to using libraries.

* **Best for:** General use, broad appeal.

**2. Focusing on sharing and community:**

> 分享借書心得，討論圖書館資源，交流閱讀與借閱的好處，一起享受閱讀的樂趣！

> *Translation:* Share experiences of borrowing books, discuss library resources, exchange the benefits of reading and borrowing, and enjoy the fun of reading together!

* **Best for:** Community-oriented blogs, encouraging interaction.

**3. Highlighting practical advice & tips:**

> 借書實用錦囊，分享借書技巧、圖書館使用秘訣，以及如何避免逾期還書的小撇步。

> *Translation:* Practical tips for borrowing books, sharing borrowing techniques, library usage secrets, and how to avoid overdue fines.

* **Best for:** Blogs with helpful advice, tutorials, or reviews.

**4. Broader, encompassing content about libraries & reading**

> 關於借書、圖書館利用、與閱讀相關的一切。包括借閱流程、好書推薦、圖書館活動報導等等。

> *Translation:* Everything related to borrowing books, using libraries, and reading. Includes borrowing procedures, recommended books, library event reports, etc..

* **Best For:** Content rich sites centered around books and the reading experience, inclusive of different aspects of the reading experience.

**5. Shorter, more search-engine focused (SEO):**

> 借書、圖書館、閱讀分享。

> *Translation:* Borrowing Books, Library, Reading Sharing.

* **Best for:** For the sake of brevity and quick SEO. Keep in mind this is significantly less informative to the reader, but may help for search indexability.

**How to use these descriptions in WordPress:**

1. **Go to the Post Tags section:** In your WordPress dashboard, go to “Posts” > “Tags”.
2. **Find the “借書” tag:** Click on the tag named “借書” or hover over it and click “Edit.”
3. **Add the description:** In the tag editing screen, you’ll find a field labeled “Description.” Paste one of the descriptions above into this field.
4. **Update the tag:** Click the “Update” button to save your changes.

**Recommendations:**

* Choose the description that best reflects the content of your blog and the overall goals.
* Consider the audience for the content and tailor the tone accordingly.
* For SEO, keep in mind descriptive keywords like 借書 (borrowing books), 圖書館 (library), and 閱讀 (reading).
* It’s not essential to have a very long description, but make it informative and helpful for both users and search engines.