Here are a few options for the WordPress post_tag description for “政府機關” (Government Agencies) in Traditional Chinese, ranging in length and detail:

**Option 1: Concise & Clear**

* **Description:** 涵蓋政府部門、機構和辦公室。 (Covers government departments, agencies, and offices.)

**Option 2: Slightly More Detailed**

* **Description:** 標示與中華民國政府相關的單位、機構和辦公室，包括行政、立法、司法等。 (Tags related to government units, agencies, and offices of the Republic of China, including executive, legislative, and judicial branches.)

**Option 3: Emphasizing Relevance**

* **Description:** 用於標示政府機關相關的新聞、文章和資訊，方便查找和分類。 (Used to tag news, articles, and information related to government agencies, for easy searching and categorization.)

**Option 4: Practical & User-Oriented**

* **Description:** 探索中華民國政府各機關的最新消息、政策和動態。 查找政府部門、公告和相關資訊。 (Explore the latest news, policies, and developments from various government agencies of the Republic of China. Find government departments, announcements, and related information.)

**Recommendation:**

I recommend **Option 1 or Option 2** for its brevity and clarity. They effectively convey the meaning without being overly verbose. Choose the one that best suits the overall style and tone of your website. If you want to attract users who are interested in finding government information, Option 4 is also a good choice.