Here are a few options for a WordPress post_tag description in Traditional Chinese for “基本運算” (Basic Operations), ranging from formal to more accessible:

**Option 1: Formal and Concise**

* **Description:** 涵蓋加、減、乘、除等基本數學運算，為數學習題及程式編寫奠定基礎。 (Covers basic mathematical operations such as addition, subtraction, multiplication, and division, laying the foundation for mathematical problems and programming.)

**Option 2: More Informative and Beginner-Friendly**

* **Description:** 了解數學的基礎，學習基本的加、減、乘、除。 適合初學者，以及想溫習數理概念的朋友。 (Understanding the fundamentals of mathematics, learning basics like addition, subtraction, multiplication, and division. Suitable for beginners and those who want to review mathematical concepts.)

**Option 3: Focusing on Practicality**

* **Description:** 學習日常生活及程式設計中不可或缺的基本數學運算，提升解決問題的能力。 (Learning fundamental mathematical operations essential for daily life and programming, enhancing problem-solving skills.)

**Option 4: Emphasizing Core Concepts**

* **Description:** 探索數學核心概念：加法、減法、乘法及除法。 建立計算能力與對數字的掌握。 (Explore core mathematical concepts: addition, subtraction, multiplication, and division. Build calculation skills and mastery of numbers.)

**Option 5: SEO Friendly**

* **Description:** 基本運算包括加減乘除，是數學學習的基礎。 學習如何運用這些數學基本運算，輕鬆解決日常生活中的問題，並為程式設計打好基礎。 (Basic operations include addition, subtraction, multiplication, and division, which are the foundation of mathematics learning. Learn how to apply these basic mathematical operations to easily solve problems in daily life, and lay a solid foundation for programming.)

**Key Considerations When Choosing:**

* **Target Audience:** Who are you writing for? (Students, general public, programmers?) Choose the tone and vocabulary that best suits them.
* **Purpose of the Tag:** What kind of content will be tagged with “基本運算”? (Tutorials, exercises, explanations?) Tailor the description to reflect this.
* **Verbosity:** Keep it concise, but include enough information to be helpful.
* **SEO:** Consider including relevant keywords (加減乘除, 數學, 程式, 運算) if you want to improve the search engine visibility of your posts.

You can adapt any of these to better fit the specifics of your website and content! Remember to be consistent with the tone and style of your website.