Here are a few options for a WordPress post_tag description for “閱讀年齡” (Reading Age) in Traditional Chinese, ranging from simple to slightly more descriptive:

**Option 1: Simple & Concise**

* **Description:** 衡量閱讀能力的方法。 (A method for measuring reading ability.)

**Option 2: Slightly more informative**

* **Description:** 指理解文章難度的年齡標準. 幫助評估讀物是否適合不同年齡層的讀者。 (Refers to an age standard for understanding the difficulty of a text. Helps assess whether reading material is suitable for readers of different age groups.)

**Option 3: Focusing on applications**

* **Description:** 用來評估書籍和文章的難度，有助於選擇適合不同孩子和成人的閱讀材料。 (Used to evaluate the difficulty of books and articles, helping to choose reading materials suitable for children and adults of different ages.)

**Option 4: Emphasizing Understanding**

* **Description:** 評估讀者理解文章內容所需的閱讀能力。通常與書籍或文章的文字複雜度相關。 (Assesses the reading ability required for a reader to understand the content of an article. Typically relates to the textual complexity of a book or article.)

**Key Considerations for Choosing:**

* **Target Audience:** Who is seeing this description? Are they general users, educators, or librarians? This will influence how technical you need to be.
* **Context of the Tag:** How is this tag being used within your WordPress site (e.g., filtering, categorization)?
* **Word Count:** Most descriptions are best kept concise. Keep it to a sentence or two at most.

I would personally recommend **Option 2** or **Option 3** for their balance of clarity and helpful information. Choose the one that fits the overall tone and usage of your website best. Remember to tailor the description to your specific content and audience.