Here’s a description for a WordPress post tag with the title “vegetarian” in Traditional Chinese (素食), keeping in mind SEO and user understanding:

**English Description (for WordPress setup):** A tag for articles, recipes, and content related to vegetarian diets, plant-based meals, and meatless lifestyles.

**Traditional Chinese Description (Post Tag Description Field in WordPress):**

**主旨：素食** – 文章、食譜及内容，聚焦於素食飲食、植物性餐點，以及無肉生活方式相關主題。涵蓋各種素食食譜、餐廳推薦、健康資訊和生活方式指南，協助您探索豐富多元的素食世界。

**Explanation of the Choices & Benefits:**

* **”主旨：素食” (Zhǔzhǐ: Sùshí) – “Subject: Vegetarian”**: This clearly introduces the topic, and in a very concise way. Using “Subject:” (主旨) helps with clarity for those browsing, similar to a subject line in an email.
* **文章、食譜及内容，聚焦於 (Wénzhāng, shípǔ jí nèiróng, jùjiāo yú) – “Articles, recipes, and content, focusing on”**: This provides instant understanding of the types of content tagged with “素食”.
* **素食飲食、植物性餐點，以及無肉生活方式相關主題 (Sùshí yǐnshí, zhíwù xìng cāndiǎn, yǐjí wú ròu shēnghuó fāngshì xiāngguān zhǔtí) – “Vegetarian diets, plant-based meals, and meatless lifestyle-related topics”**: This describes in more detail what’s covered, ensuring broad keyword coverage within the tag.
* **涵蓋各種素食食譜、餐廳推薦、健康資訊和生活方式指南 (Hángài gèzhǒng sùshí shípǔ, cāntīng tuījiàn, jiànkāng zīxùn hé shēnghuó fāngshì zhǐnán) – “Covering various vegetarian recipes, restaurant recommendations, health information, and lifestyle guides”**: This list of topics specifically helps attract the right audience by listing the exact type of content they might search for. This also increases the use of relevant keywords.
* **協助您探索豐富多元的素食世界 (Xiézhù nín tànsuǒ fēngfù duōyuán de sùshí shìjiè) – “Helping you explore the rich and diverse vegetarian world”**: This is a friendly, inviting ending that encourages engagement and emphasizes the breadth of the topic.
* **Keywords Rich but Natural**: It uses relevant keywords naturally, avoiding keyword stuffing.
* **Clear and Concise**: The description delivers information quickly and effectively, appealing to users who are quickly scanning.
* **Informative and Inviting**: The description aims to answer “what is this tag about?” and “why should I read this?”.

This description strikes a good balance between being informative for users, well-optimized for search engines, and relevant to the tag “素食”.