Here are a few options for a WordPress post_tag description for “自然科學” (Zìrán Kēxué – Natural Science) in Traditional Chinese, ranging in formality:

**Option 1: Simple and Clear**

* **Title:** 自然科學
* **Description:** 分享與探討自然世界、物理、化學、生物學等領域的相關知識與資訊。 (Sharing and discussing related knowledge and information about the natural world, physics, chemistry, biology, and other fields.)

**Option 2: Slightly More Detailed**

* **Title:** 自然科學
* **Description:** 涵蓋物理、化學、生物學、地球科學、天文學等多個學科的知識內容，探索自然界的奧秘與規律。 (Covering knowledge content from multiple disciplines such as physics, chemistry, biology, earth sciences, astronomy, etc., exploring the mysteries and regularities of the natural world.)

**Option 3: Focus on Inquiry and Curiosity**

* **Title:** 自然科學
* **Description:** 啟發對自然的探索精神，分享對自然現象的觀察、研究，以及科學知識的應用。 包含物理、化學、生物等領域。 (Inspiring the spirit of exploration of nature, sharing observations, research, and the application of scientific knowledge. Including fields such as physics, chemistry, and biology.)

**Option 4: Emphasizing Connection to Life**

* **Title:** 自然科學
* **Description:** 與生活息息相關的自然科學知識，探索我們身邊的世界，以及科學如何影響我們的生活。 包括物理學、化學、生物。 (Natural science knowledge closely related to life, exploring the world around us, and how science impacts our lives. Including physics, chemistry, and biology.)

**Which Option to Choose:**

* **Consider your audience:** Who are you writing for? General public? Students? Researchers?
* **Think about your content:** Does your blog focus on a specific area of natural science or a broader range?
* **Keep it concise:** WordPress tag descriptions ideally should be relatively short and to the point.

**Recommendation:** I’d generally recommend **Option 2** or **Option 4** as they are a good balance of informative and inviting. They give a good overview of what the tag encompasses. Choose the description that best fits your blog’s overall tone and content.