Here are a few options for the WordPress post_tag description, each with a slightly different focus:

**Option 1 (General & Concise):**

> **Description:** 天然抗氧化劑，保護身體免受自由基侵害，維持健康。
>
> **Translation:** Natural antioxidants, protecting the body from free radical damage and maintaining health.

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

> **Description:** 了解天然抗氧化劑：從食物到成分，它們如何幫助身體對抗氧化壓力，促進健康老化。
>
> **Translation:** Learn about natural antioxidants: from foods to ingredients, how they help the body fight oxidative stress and promote healthy aging.

**Option 3 (Focus on Benefits):**

> **Description:** 天然抗氧化劑 – 提升免疫力，保護細胞，延緩衰老，讓您青春常駐！
>
> **Translation:** Natural antioxidants – boost immunity, protect cells, slow down aging, and keep you looking young!

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

> **Description:** 探索天然抗氧化劑的重要性，包括食物來源、抗氧化成分以及它們對健康的益處，例如減少自由基損傷和促進整體健康。 (包含：維生素C、維生素E、多酚類)
>
> **Translation:** Explore the importance of natural antioxidants, including food sources, antioxidant ingredients, and their health benefits, such as reducing free radical damage and promoting overall health. (Includes: Vitamin C, Vitamin E, Polyphenols)

**Key Considerations When Choosing:**

* **Relevance to Your Content:** Choose the description that best reflects the content you’re tagging.
* **Target Audience:** Consider who you’re writing for and tailor the language accordingly.
* **SEO:** If SEO is important, use relevant keywords like “維生素C” (Vitamin C), “自由基” (free radicals), and “健康” (health). (Note: the fourth option uses the provided keywords)
* **Conciseness:** WordPress tags should ideally have a short description for clarity.

Choose the option that best suits your needs! You can, and perhaps should, also modify these descriptions to improve the fit with your specific content.