Here are a few options for a WordPress post_tag description for “減緩氣候變遷” (Mitigating Climate Change) in Traditional Chinese, with varying levels of detail and focus:

**Option 1: Concise and Direct**

* **Description:** 致力於減少溫室氣體排放，減緩氣候變遷帶來的影響。 (Committed to reducing greenhouse gas emissions and mitigating the impact of climate change.)
* **Rationale:** Simple, clear, and directly relates to the topic.

**Option 2: A Bit More Explanatory**

* **Description:** 了解並參與減緩氣候變遷的努力。從節能減碳到推動永續發展，探索各種應對氣候危機的方法。 (Learn and participate in efforts to mitigate climate change. From energy conservation and carbon reduction to promoting sustainable development, explore various methods for addressing the climate crisis.)
* **Rationale:** Offers a slightly more comprehensive overview, suggesting the scope of related content. Includes calls to action.

**Option 3: Emphasis on Action**

* **Description:** 採取行動，減緩氣候變遷。 分享及探討減少碳足跡，支持環境保護的相關資訊和策略。 (Take action to mitigate climate change. Share and discuss information and strategies for reducing your carbon footprint and supporting environmental protection.)
* **Rationale:** Focuses on the practical aspect and encourages engagement with the topics.

**Option 4: A More Formal Tone (Suitable for government or scientific blogs)**

* **Description:** 聚焦於識別、評估和減輕與氣候變遷相關的風險。 包含關於溫室氣體減排、能源效率提升、以及氣候適應策略的最新研究和分析。 (Focus on identifying, assessing, and mitigating risks related to climate change. Includes the latest research and analysis on greenhouse gas emission reduction, energy efficiency improvements, and climate adaptation strategies.)
* **Rationale:** A more academic and technical option. Good for sites focused on scientific climate information.

**Choosing the Best Option**

The best description for your WordPress post_tag will depend on the overall tone and content of your website. Consider:

* **Your Target Audience:** Are you writing for experts, the general public, or a specific group?
* **The Content of the Posts:** What types of posts will be tagged with this term?
* **Your Goals:** Do you want to inform, encourage action, or provide in-depth analysis?

I would recommend either **Option 1** if you need something quick and direct, **Option 2** for more comprehensive content, or **Option 3** to encourage audience participation. Make sure it clearly represents the type of content that will be associated with the tag. Good luck!