Here are a few options for a description for the WordPress post_tag “104系統” in Traditional Chinese, varying in specificity and length:

**Option 1 (Short & Sweet):**

* **Description:** 104號巴士線相關資訊分享與討論。 (Information and discussion related to the 104 bus route.)

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

* **Description:** 分享關於104號公車的最新消息、路線資訊、搭乘經驗和討論。 (Sharing the latest news, route information, riding experience, and discussions about the 104 bus.)

**Option 3 (Focusing on Community):**

* **Description:** 這裡是關於104號公車的聚集地，分享您的搭乘體驗、提供路線建議，或尋找同路人一起搭車！ (This is a gathering place for the 104 bus, share your riding experiences, provide route suggestions, or find companions to ride with!)

**Option 4 (If the bus route serves a specific area):**

* **Description (Example, if the 104 bus serves the Taipei City area):** 台北市104號公車相關資訊，包括路線、班次、停靠站點等。 (Information related to the 104 bus in Taipei City, including routes, schedules, and bus stops.)

**Considerations when choosing:**

* **Target Audience:** Who is reading the posts? Are they locals familiar with the bus route or newcomers?
* **Content of the Posts:** What kind of content will be tagged with “104系統”? News, reviews, technical guides, etc.?
* **Keywords:** Think about what keywords people might use to search for this tag.

In general, options 1 or 2 are good starting points. Option 3 is good if you want to foster a sense of community. Option 4 is valuable if the bus line pertains to a region.