Here are a few options for a description for a WordPress tag titled “素食原因” (Sùshí yuányīn – Reasons for Vegetarianism) in Traditional Chinese, ranging from concise to slightly more detailed:

**Option 1 (Concise):**

> 解釋素食選擇背後的各種原因。 (Jiěshì sùshí xuǎnzé bèi hòu de gèzhǒng yuányīn.)
> *Translation: Explains the various reasons behind the choice of vegetarianism.*

**Option 2 (Slightly More Detailed):**

> 探索促使人們選擇素食的理由，包括健康、倫理、環境等面向。 (Tànsuǒ cùshǐ rénmen xuǎnzé sùshí de lǐyóu, bāokuò jiànkāng, lúnlǐ, huánjìng děng miànxiàng.)
> *Translation: Explores the reasons that prompt people to choose vegetarianism, including health, ethics, environmental aspects, and more.*

**Option 3 (More Descriptive):**

> 分享關於素食背後的原因和動機，涵蓋健康效益、動物福利、永續環境以及其他相關議題。 (Fēnxiǎng guānyú sùshí bèi hòu de yuányīn hé dòngjī, hángài jiànkāng xiàoyì, dòngwù fúlì, yǒngxù huánjìng yǐjí qítā xiāngguān yìtí.)
> *Translation: Shares the reasons and motivations behind vegetarianism, covering health benefits, animal welfare, sustainable environment, and other relevant topics.*

**Option 4 (Direct and Clear):**

> 關於為什麼選擇素食的所有原因：健康、道德、環境。 (Guānyú wèishénme xuǎnzé sùshí de suǒyǒu yuányīn: jiànkāng, dàodé, huánjìng.)
> *Translation: All the reasons for choosing vegetarianism: health, ethics, environment.*

**Which to Choose:**

* **Consider your overall blog style and audience.** The concise options are good for efficiency.
* **Think about how much detail you usually put in your tags.** A more descriptive tag can help users better understand the scope of the content associated with it.
* **Prioritize clarity.** The description should quickly and accurately convey what the tag covers.

I recommend using **Option 2 or 3** as they are more informative and provide a good overview of the topics related to the tag.