Here are a few description options for the WordPress post tag “降雨” (Jiàngyǔ – Rainfall) in Traditional Chinese, ranging in style and focus:

**Option 1: Concise and Practical**

* **Description:** 本文標籤：降雨 – 涵蓋所有與降雨相關的文章，包括氣象預報、降雨影響、降雨量測及其他相關資訊。 (This post tag: Rainfall – Covers all articles related to rainfall, including weather forecasts, the effects of rainfall, rainfall measurements, and other relevant information.)

**Option 2: More Descriptive and Contextual**

* **Description:** 降雨是自然界中重要的水循環現象，影響著農業、水資源管理和生態環境。本標籤涵蓋有關降雨的各個面向，從天氣預報到降雨對生活及環境的影響，希望能幫助您了解降雨的相關知識。 (Rainfall is an important phenomenon in the natural water cycle, influencing agriculture, water resource management, and the ecological environment. This tag covers various aspects of rainfall, from weather forecasts to its impact on life and the environment. We hope it helps you understand related knowledge of rainfall.)

**Option 3: Engaging and Topic-Specific (If Applicable to your Content)**

* **Description (If focused on travel/photography):** 降雨時分，也是攝影師捕捉美麗景色的好時機。本標籤收錄與降雨相關的攝影作品、旅遊經歷，以及如何在雨中獲得最佳體驗的建議。 (Rainfall is also a good time for photographers to capture beautiful scenery. This tag includes photography works, travel experiences, and suggestions on how to get the best experience in the rain.)

**Option 4: Simple and Direct**

* **Description:** 降雨相關的文章都在這裡。 (Articles related to rainfall are all here.)

**Key considerations when choosing:**

* **Target Audience:** Who are you writing for? Their level of knowledge and interest will influence your choice.
* **Content of Your Blog:** What kind of blog posts would you typically tag with “降雨”? Tailor the description to fit.
* **SEO (Search Engine Optimization):** If SEO is important, consider including relevant keywords, such as “天氣預報” (weather forecast), “雨水” (rainwater), “水循環” (water cycle), etc., depending on your content.
* **Length:** WordPress typically shows a small preview. You can usually write a longer description, but the visible part should be concise.

I recommend Option 1 or 2 as a good starting point. Choose the one that best suits your content and goals.