Here are a few options for a WordPress post_tag description, depending on the desired tone and purpose:

**Option 1: Concise and Informative**

* **Title:** 膝蓋問題
* **Description:** 關於膝蓋疼痛、損傷及其他膝蓋相關疾病的文章分類。 包括成因、治療方法和預防措施。 (A classification of articles about knee pain, injuries, and other knee-related conditions. Includes causes, treatments, and preventative measures.)

**Option 2: Slightly More Detailed and User-Friendly**

* **Title:** 膝蓋問題
* **Description:** 探索所有與膝蓋健康相關的文章！ 從膝蓋疼痛的診斷與治療，到運動員常見的膝蓋損傷，再到日常的膝蓋保健，這裡都有適合你的資訊。 (Explore all articles related to knee health! From diagnosis and treatment of knee pain, to common knee injuries in athletes, to daily knee care, you’ll find information here that’s right for you.)

**Option 3: Focus on Prevention and Overall Health**

* **Title:** 膝蓋問題
* **Description:** 了解如何保護你的膝蓋，提升活動力和生活品質。 本分類提供關於改善膝蓋健康的建議、運動指南、伸展和鍛鍊，以及預防膝蓋問題的策略。 (Learn how to protect your knees, improve mobility, and quality of life. This category offers advice on improving knee health, exercise guides, stretching and exercises, and strategies to prevent knee problems.)

**Option 4: Keyword-Rich (for SEO)**

* **Title:** 膝蓋問題
* **Description:** 膝蓋疼痛、關節炎、韌帶損傷、半月板撕裂等問題的專業資訊。 了解治療、康復、物理治療、運動護具以及如何改善膝蓋健康。 找到適合你的膝蓋保健方案與建議。 (Professional information on problems such as knee pain, arthritis, ligament injuries, and meniscus tears. Learn about treatments, recovery, physical therapy, sports braces, and how to improve knee health. Find knee care plans and recommendations suitable for you.)

**Explanation of Choices:**

* **Clarity:** Each option clearly explains the topics covered by the tag.
* **SEO:** Option 4 incorporates keywords like “關節炎” (arthritis), “韌帶損傷” (ligament injuries), etc. which might help with search engine optimization.
* **Target Audience:** The choice of option might depend on your blog’s focus. Option 2 is more general, while option 3 is more proactive, and option 4 is more comprehensive.

**How to use these in WordPress:**

1. **Navigate to the Post Tags section:** In your WordPress admin dashboard, go to **Posts > Tags**.
2. **Create a new tag:** Add a new tag with the following details:
* **Name:** 膝蓋問題
* **Slug:** (WordPress will automatically generate this; it’s usually a lowercase version of the title, like “xigai-wenti”) *Make sure it’s unique.*
* **Description:** *Choose one of the descriptions above (or create your own). This is the field you’ll paste the text into.*
3. **Save the Tag**.
4. **When editing posts:** When writing a new post, use this tag to categorize the relevant articles.

Remember to tailor the description to best fit your blog’s style and the type of content you publish. Good luck!