Here are a few options for the WordPress post_tag description, in Traditional Chinese, with varying levels of detail:

**Option 1: Concise & Informative**

* **Description:** 涵蓋蛋和奶製品的素食飲食，可提供多樣的營養來源。 (Covers vegetarian diets that include eggs and dairy products, offering a variety of nutritional sources.)

**Option 2: More Detailed**

* **Description:** 蛋奶素飲食泛指包含蛋類及奶類食物的素食方式，不食用肉類（包括紅肉、家禽、海鮮等），但可食用雞蛋、牛奶、乳酪等乳製品。 這是一種相對彈性的素食選擇，更容易融入日常飲食。 (Egg and dairy vegetarianism (ovo-lacto vegetarianism) refers to a vegetarian diet that includes eggs and dairy products, but excludes meat (including red meat, poultry, and seafood). This is a relatively flexible vegetarian option, easier to incorporate into daily life.)

**Option 3: Focusing on Advantages**

* **Description:** 了解蛋奶素飲食的好處。 這種飲食方式提供豐富的蛋白質、鈣質和其他重要的營養素，同時避免食用肉類. (Learn about the benefits of an egg and dairy vegetarian diet. This diet provides a rich source of protein, calcium, and other essential nutrients while avoiding meat consumption.)

**Option 4: Targeting beginners**

* **Description:** 對素食有興趣，但不知道從哪裡開始？ 蛋奶素飲食是一個友善的入門選項，允許食用雞蛋和乳製品。 一起探索這種多變的、美味的飲食方式吧！ (Interested in vegetarianism but don’t know where to start? Ovo-lacto vegetarianism is a friendly starting point, allowing the consumption of eggs and dairy products. Let’s explore this varied and delicious way of eating together!)

**Key considerations when choosing:**

* **Target Audience:** Who are you writing for? Beginners or experienced vegetarians?
* **Purpose of the Tag:** Is this tag just for organization, or are you trying to educate users?
* **Context:** How will this tag be used in conjunction with other tags, categories, and content?

Choose the description that best suits your needs and your website’s overall tone. You can also adjust these options to blend the best features of each. For example, you could combine the conciseness of Option 1 with a little more detail from Option 2.