Here are a few options for a WordPress tag description for “素材” (Su-cái – Materials/Resources) in Traditional Chinese, ranging in approach and detail:

**Option 1: Short and Sweet (Good for quick overview)**

* **Description:** 用於網站設計、內容創作等的素材，如圖片、影片、音效、文件等。 (Used for website design, content creation, etc., materials such as images, videos, sound effects, documents, etc.)

**Option 2: Slightly More Descriptive (Focus on variety)**

* **Description:** 涵蓋各式各樣的素材，提供網站設計、文章撰寫、多媒體製作等所需的資源。 包括照片、插圖、向量圖、音訊檔案、影片片段、模板及其他可用素材。 (Encompassing various materials, providing resources needed for website design, article writing, multimedia production, etc. Includes photos, illustrations, vector graphics, audio files, video clips, templates, and other usable materials.)

**Option 3: Focusing on Usage and Organization (If you group materials based on type)**

* **Description:** 您可以在這裡找到用於網站、平面設計、社群媒體和其他專案的素材。 標籤包含不同類型的素材，方便您快速找到所需的內容，例如：圖片、影片、圖示、模板等。 (Here you can find materials used for websites, graphic design, social media, and other projects. Tags include different types of materials to help you quickly find the content you need, such as images, videos, icons, templates, etc.)

**Option 4: More General and encompassing (For a broad range)**

* **Description:** 網站設計、內容創作、行銷推廣等所需的各種素材集合。 包含圖片、影片、音訊、設計元素、文件、模板等等，為您提供豐富的資源。(A collection of various materials needed for website design, content creation, marketing, etc. Contains images, videos, audio, design elements, documents, templates, etc., providing you with rich resources.)

**How to use in WordPress:**

1. **Go to Posts > Tags in your WordPress Admin Panel.**
2. **Find the “素材” tag (or add it if it doesn’t exist).**
3. **In the “Description” field, paste one of the options above (or edit them to fit your needs!).**
4. **Click “Update” to save the tag.**

Choose the description that best reflects the kind of materials you are tagging and how you want to present them to your visitors. Good luck!