Here are a few options for the WordPress post_tag description, catering to different levels of detail:

**Option 1: Concise & Direct**

* **Description:** 各種米、麥、豆等可食用的籽實植物的統稱。又稱糧食。 (A collective term for various edible seed plants, such as rice, wheat, and beans. Also known as grain.)

**Option 2: Slightly More Detailed**

* **Description:** 指人類賴以維生的主要食物來源，包括稻米、小麥、玉米、高粱、大豆等。是重要的碳水化合物來源。 (Refers to the primary food source for humankind, including rice, wheat, corn, sorghum, and soybeans. A significant source of carbohydrates.)

**Option 3: Emphasizing Variety**

* **Description:** 涵盖各种类型的穀物，包括不同品种的大米、小麦和其他谷物。探索多樣化的穀物世界，瞭解其營養價值和烹飪方法。 (Encompasses all types of grains, including different varieties of rice, wheat and other cereals. Explore the diverse world of grains, and learn about their nutritional value and cooking methods.)

**Option 4: Using SEO Keywords**

* **Description:** 關於米、麵粉、穀物食譜、健康飲食、糧食的標籤。了解不同種類的穀物，包括稻米、小麥、燕麥，以及它們的益處和烹飪方式。 (A tag for rice, flour, grain recipes, healthy eating, and food. Learn about different types of grains, including rice, wheat, oats, as well as their benefits and cooking methods.)

**Explanation of Choices & Considerations:**

* **Clarity:** All options use clear and accurate Traditional Chinese.
* **Target Audience:** Consider who will be viewing your blog. Do they want a simple definition, or more in-depth information?
* **Keywords:** If SEO is important, Option 4 includes keywords that people might search for.
* **Brevity vs Detail**: WordPress post tag descriptions aren’t designed to be long. Choose an option that delivers concise information in a way that is helpful and relevant.

**How to Use in WordPress:**

1. Go to your WordPress dashboard.
2. Go to “Posts” -> “Tags.”
3. Find the tag “穀物” (or create it if necessary).
4. Edit the tag.
5. In the “Description” field, paste your chosen description.
6. Click “Update.”

Choose the description that best suits your blog’s purpose and target audience. Good luck!