Here are a few descriptions for the WordPress post_tag “商務卡” in Traditional Chinese, with varying lengths and focuses:

**Option 1: Short & Simple**

> 適用於商業用途的卡片。 (Applicable to cards for business purposes.)

**Option 2: Slightly More Informative**

> 涵蓋各種商務用途的卡片，包括但不限於員工卡、客戶卡、會員卡等。 (Encompassing various business cards, including but not limited to employee cards, customer cards, membership cards, etc.)

**Option 3: Focusing on Benefits**

> 了解商務卡的好處，提升您的品牌形象和業務流程。 這裡有關於如何選擇、設計和管理商務卡的信息，讓您的業務更上一層樓。 (Learn the benefits of business cards and enhance your brand image and business processes. Here you’ll find information on how to choose, design, and manage business cards to take your business to the next level.)

**Option 4: Focusing on Content Covered**

> 與商務卡相關的資訊，包括：設計、印刷、用途、法律規定以及最佳實務。 探索如何有效地運用商務卡來促進您的業務發展。 (Information related to business cards, including: design, printing, usage, legal regulations, and best practices. Explore how to effectively use business cards to promote your business development.)

**How to choose the best description:**

* **Consider your audience:** Who is reading your posts? A technical audience vs. a general audience might need different levels of detail.
* **Think about the function of the tag:** Is the tag meant to categorize the content, or to act as a keyword people will search for?
* **Keep it concise:** WordPress descriptions shouldn’t be excessively long.

I recommend choosing **Option 2** or **Option 4** for a good balance of information and clarity. You could also modify them based on your specific content.