Here are a few options for a description of the WordPress post_tag “費用編號” in Traditional Chinese, depending on the tone and purpose you want to convey:

**Option 1: Short & Simple (Good for general use)**

* **繁體中文翻譯:** 費用編號標籤，用於標記與特定編號相關的費用項目。
* **English Translation (for admin use):** Cost Code Tag, used to categorize expenses based on their specific code.

**Option 2: More Informative (Explains usage)**

* **繁體中文翻譯:** 此標籤用於分類和組織文章，這些文章討論了特定費用相關的資訊，例如發票、報銷、預算等，並以費用編號作為主要分類標準。
* **English Translation (for admin use):** This tag is used to categorize and organize articles discussing information related to specific expenses such as invoices, reimbursements, budgets, etc., using the cost code as the primary classification.

**Option 3: Focus on Search and Organization**

* **繁體中文翻譯:** 標示文章與特定的費用編號相關，方便您快速搜尋和整理與特定費用有關的內容。
* **English Translation (for admin use):** Mark articles related to specific cost codes, allowing quick searching and organization of content related to particular expenses.

**Option 4: Technical (For more technical users)**

* **繁體中文翻譯:** 用以分類文章，根據公司/組織的內部費用編號系統，將相關費用項目進行歸類。 這有助於跨文章的費用資料關聯與分析。
* **English Translation (for admin use):** Used to classify articles according to the internal cost coding system of the company/organization, categorizing related expense items. This facilitates cross-article association and analysis of cost data.

**Key Considerations When Choosing:**

* **Target Audience:** Who will be seeing this description? Is it for the general public, internal staff, or both? Adjust the language accordingly.
* **Specificity:** Does the description need to be very specific about the type of expenses or just generally related to costs?
* **SEO Considerations:** While not a primary factor for tag descriptions, you can subtly mention keywords like “費用” (cost, expense), “編號” (code), “發票” (invoice), “預算” (budget) if relevant to your content.
* **Consistency:** Make sure the description aligns with how you’re actually using the tag in your posts.

Choose the description that best fits your needs and provides clear information about the “費用編號” tag. Remember to include the English translation if you have a multilingual site or if your administrative users are more comfortable with English. You wouldn’t typically *have* an English translation of the tag itself, just the tag description.