Here are a few options for a description for the WordPress post tag “國際貿易 (Guójì Màoyì)” (International Trade) in Traditional Chinese, ranging in length and focus:

**Option 1: Concise and Clear**

> **Description:** 涵蓋全球商品和服務的進出口、貿易政策、法規及相關經濟活動。

> **Translation:** Covers the import and export of goods and services worldwide, trade policies, regulations, and related economic activities.

**Option 2: Slightly more detailed and relevant to a blog context:**

> **Description:** 探討國際貿易的最新趨勢、挑戰和機遇。 包括貿易協議、供應鏈管理、關稅、外匯等重要議題，以及對全球經濟的影響。

> **Translation:** Explores the latest trends, challenges, and opportunities in international trade. Includes important topics such as trade agreements, supply chain management, tariffs, foreign exchange, and their impact on the global economy.

**Option 3: Focus on the impact and potential:**

> **Description:** 深入探討國際貿易對企業、政府和全球經濟的影響。 了解出口擴張、市場准入、和國際合作如何促進經濟增長。

> **Translation:** Delves into the impact of international trade on businesses, governments, and the global economy. Understand how export expansion, market access, and international cooperation promote economic growth.

**Option 4: More general and widely applicable:**

> **Description:** 本標籤下的文章涉及全球商品和服務的跨國交易。 包括進出口流程、貿易政策、貿易壁壘和國際市場分析。

> **Translation:** Articles under this tag cover international transactions of goods and services. This includes import and export processes, trade policies, trade barriers, and international market analysis.

**Choosing the best option depends on:**

* **Your blog’s focus:** Is it more business-oriented, academically focused, or general interest?
* **Target audience:** Are they experts, students, or the general public?
* **The kind of posts you’ll be tagging:** What topics will you cover related to international trade?

I would recommend Option 2 or 3 as they are slightly more descriptive and interesting for readers, while remaining relevant and accurate. You can also modify them slightly to perfectly fit your needs. Remember to write your text in Traditional Chinese characters! Good luck with your blog!