Here are a few options for the post_tag description, ranging from concise to slightly more detailed, all in Traditional Chinese:

**Option 1 (Concise):**

> 認識乳酸菌的益處與好處。

**Translation:** Understand the benefits and good effects of lactic acid bacteria.

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

> 探討乳酸菌對健康的功效，包括腸道健康、免疫力提升等。

**Translation:** Explore the effects of lactic acid bacteria on health, including gut health, improved immunity, etc.

**Option 3 (Emphasizing Searchability and Keywords):**

> 乳酸菌功效，讓你了解益生菌的奧秘。改善腸道健康，增強免疫力，助你擁有更健康的體魄。

**Translation:** The benefits of lactic acid bacteria, letting you understand the mystery of probiotics. Improves gut health, enhances immunity, helps you have a healthier body.

**Option 4 (Focusing on Specific Use):**

> 了解乳酸菌如何幫助消化、促進營養吸收、及改善整體健康。

**Translation:** Understand how lactic acid bacteria aid digestion, promote nutrient absorption, and improve overall health.

**Choosing the best option:**

Consider what you want to achieve with your tag description:

* **SEO (Search Engine Optimization):** Option 3 includes relevant keywords like “益生菌” (probiotics) and focuses on health benefits, helpful for search.
* **Clarity and Brevity:** Option 1 is quick and to the point.
* **Target Audience:** If your content focuses on specific benefits, Options 2 or 4 might be more relevant.

Choose the option that best suits your needs and the specific content of your blog posts. Remember to use the tag description field in your WordPress tag settings. Good luck!