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

**Option 1 (Concise & General):**

> 探索世界，體驗精彩的出國旅行！分享旅遊攻略、目的地推薦，以及旅行準備的點滴。

(Translation: Explore the world and experience exciting overseas travel! Share travel guides, destination recommendations, and the little things involved in travel preparation.)

**Option 2 (More Descriptive & Keyword-Rich):**

> 想來一場夢寐以求的出國旅遊嗎？在這個標籤裡，您可以找到關於機票住宿比價、景點推薦、美食文化體驗、行程規劃技巧，以及行李打包、簽證攻略等實用資訊。分享您的海外旅遊經驗，一起規劃下一次的完美旅程！

(Translation: Dreaming of an overseas trip? In this tag, you can find information on comparing flight and accommodation prices, destination recommendations, food and cultural experiences, itinerary planning tips, and practical information such as packing and visa guides. Share your overseas travel experiences and plan the next perfect trip together!)

**Option 3 (Focus on Community & Interaction):**

> 歡迎加入出國旅遊的大家庭！這裡匯聚了各種出國旅遊經驗、攻略、照片，以及來自世界各地的旅行分享。讓我們一起激發旅行靈感，規劃出最精彩的出國行程。有任何問題或想分享的，都歡迎留言互動！

(Translation: Welcome to the overseas travel family! This tag gathers all kinds of overseas travel experiences, guides, photos, and travel shares from all over the world. Let’s inspire travel ideas and plan the most exciting overseas itineraries. Feel free to leave comments and interact if you have any questions or want to share!)

**Option 4 (Short & SEO Friendly):**

> 出國旅遊相關文章彙總。機票、住宿、景點、攻略分享。

(Translation: Compilation of overseas travel articles. Flight, accommodation, attractions, and guide sharing.)

**Consider these factors when choosing the best option:**

* **Your target audience:** Who are you writing for? (Beginners, experienced travelers, etc.)
* **The content on your website:** What kind of information do you provide related to 出國旅遊?
* **SEO:** Consider relevant keywords that people might search for (e.g., 機票, 住宿, 景點, 攻略, 行程規劃)
* **The style of your website:** Choose a description that matches the overall tone of your blog.

I recommend Option 2 or 3 as a good balance for a WordPress tag description. Remember to save the description in your WordPress tag settings!