Here are a few description options for the WordPress post_tag “維生素B12” (Vitamin B12) in Traditional Chinese, ranging from simple to more descriptive:

**Option 1 (Simple & Direct):**

* **Description:** 維生素B12相關資訊，包括功效、來源、缺乏症狀及補充方法。 (Information related to Vitamin B12, including benefits, sources, deficiency symptoms, and supplementation methods.)

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

* **Description:** 了解維生素B12在人體中的重要性。 我們將探討其對神經、血細胞、能量代謝的影響，以及如何透過飲食或補充品獲得足夠的B12。 (Learn about the importance of Vitamin B12 in the human body. We will explore its impact on nerves, blood cells, energy metabolism, and how to get enough B12 through diet or supplements.)

**Option 3 (Focusing on User Benefit):**

* **Description:** 擔心疲勞、記憶力衰退或貧血嗎？ 深入了解維生素B12，找出如何改善您的健康狀況。 這裡提供關於維生素B12的最新資訊，幫助您保持活力十足！ (Worried about fatigue, memory loss, or anemia? Learn more about Vitamin B12 and discover how to improve your health. Get the latest information on Vitamin B12 to help you stay energized!)

**Option 4 (SEO-Friendly):**

* **Description:** 維生素B12：所有您需要知道的！ 這是一個關於維生素B12的全面指南。 探索維生素B12的功能、食物來源、缺乏症的徵兆及預防方法。 找到最佳的維生素B12補充品，改善您的健康。 (Vitamin B12: All You Need to Know! This is a comprehensive guide to Vitamin B12. Explore the function of Vitamin B12, food sources, signs of deficiency and prevention methods. Find the best Vitamin B12 supplements to improve your health.)

**Considerations for Choosing:**

* **Website Context:** What kind of posts will be tagged with this? If it’s a health blog, option 3 or 4 might be best. If it’s a more general blog, option 2 or 1 might be suitable.
* **SEO:** Option 4 is specifically designed with SEO in mind, incorporating keywords.
* **Target Audience:** Who are you trying to reach? Tailor the language to their level of understanding.

Remember to write in Simplified Chinese if that’s what your website uses. If you use a plugin to translate descriptions, ensure it supports translating the tag description as well.