Here are a few options for a WordPress post tag description for “開發平台 (Development Platform)” in Traditional Chinese, ranging from simple to more detailed, depending on your website’s needs:

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

> 軟體開發所使用的平台及環境。
>
> (Software development platforms and environments.)

This is short, to the point, and suitable for a general audience.

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

> 涵蓋各式各樣的開發環境、框架、工具及基礎設施，用於建立應用程式和軟體。
>
> (Encompassing various development environments, frameworks, tools, and infrastructure used to build applications and software.)

This is a bit more informative and gives the user a better understanding of the scope.

**Option 3 (Highlighting Purpose):**

> 探索用於開發各種軟體產品的平台。了解不同平台的優點、功能，以及如何選擇適合的工具。
>
> (Explore platforms used for developing various software products. Understand the advantages, features of different platforms, and how to choose the right tools.)

This option focuses on the user’s perspective and what they can expect to find using this tag.

**Option 4 (Technical Focus):**

> 包含程式設計語言、編譯器、調試器、程式庫、SDK 等，用於開發軟體應用程式。
>
> (Including programming languages, compilers, debuggers, libraries, SDKs, etc., for developing software applications.)

This is ideal if your website caters to a more technical audience.

**To choose the best description, consider:**

* **Your target audience:** Who are you writing for?
* **The scope of your content:** What kind of information will be tagged with “Development Platform”?
* **The purpose of the description:** Does it need to just clarify the tag’s meaning, or should it also encourage users to explore the content?

You can adapt these options to fit your specific needs. Remember to keep the description concise and relevant to your content. After choosing one, simply enter it in the “Description” field when creating or editing the tag in your WordPress admin panel. Good luck!