Here are a few options for the description of a WordPress post_tag titled “應用程式開發” (Yìngyòng Chéngxù Kāifā – Application Development) in Traditional Chinese, ranging in length and focus:

**Option 1 (Concise & General):**

> 涵蓋所有關於應用程式開發的內容，包括 iOS、Android、Web 應用程式、後端開發、前端開發等。

> *Translation:* Covers all content related to application development, including iOS, Android, Web applications, backend development and frontend development etc.

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

> 探索應用程式開發的最新技術、趨勢和實踐方法。從基礎知識到進階技巧，本標籤分享各式應用程式的開發教學、範例程式碼、開發工具介紹以及實戰經驗，助您打造優秀的應用程式。

> *Translation:* Explore the latest technologies, trends, and best practices in application development. From fundamental knowledge to advanced techniques, this tag shares development tutorials, sample code, introduction to development tools, and practical experience for creating excellent applications.

**Option 3 (Focus on Target Audience):**

> 專為程式設計師、開發人員和對應用程式開發感興趣的人士而設。 這裡彙集了關於手機應用程式、網頁應用程式、以及各種程式語言的開發資源、教學和實用技巧，幫助您提升開發技能。

> *Translation:* Designed for programmers, developers, and anyone interested in application development. This tag gathers development resources, tutorials, and practical skills for mobile applications, web applications, and various programming languages, helping you improve your development skills.

**Option 4 (Business-Oriented):**

> 洞悉應用程式開發市場的最新動態。 從應用程式設計、開發到部署，本標籤提供關於如何規劃、創建和推廣成功的應用程式的見解，探索應用程式為您的業務帶來的增長潛力。

> *Translation:* Get insights into the latest trends in the application development market. From application design, development to deployment, this tag provides insights on how to plan, create, and promote successful applications, exploring the growth potential applications bring to your business.

**Choosing the Best Option:**

The best option depends on the overall tone and content of your website. Consider the following:

* **Target audience:** Who are you writing for?
* **Level of detail:** How much information do you want to provide in the description?
* **Website’s overall theme:** Does it focus on tutorials, news, or business?

I recommend using Option 2 or 3 as they are practical and versatile. Also, keep your WordPress site’s theme in mind as you add tags (and descriptions) – aim for consistency.