Here are a few options for a WordPress post tag description for “飲食補充” (Yǐnshí bǔchōng – Dietary Supplement) in Traditional Chinese, ranging in specificity:

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

> 飲食補充に関する文章をまとめたもので、栄養補助食品、ビタミン、ミネラルなどを含みます。健康的な食生活のサポートに役立ちます。 (This is a collection of articles related to dietary supplements, including nutritional supplements, vitamins, minerals, etc. Helps support a healthy diet.)

**Translation for WordPress:**

> 包括關於飲食補充的文章，包含營養品、維生素、礦物質等。 幫助您維持健康飲食。 (Bāokuò guānyú yǐnshí bǔchōng de wénzhāng, bāohán yíngyǎng pǐn, wēishēngsù, kuàngwùzhí děng. Bāngzhù nín wéichí jiànkāng yǐnshí.)

**Option 2 (Slightly more Specific):**

> 了解各種飲食補充，包括維生素、礦物質、蛋白質粉以及其他健康輔助食品的資訊。針對不同的健康需求，提供詳盡的資訊與建議。 (Learn about various dietary supplements, including information on vitamins, minerals, protein powders, and other health aids. Provides detailed information and suggestions for different health needs.)

**Translation for WordPress:**

> 探索各類飲食補充，包括維生素、礦物質、蛋白質粉末及其他健康輔助食品的資訊。針對不同健康需求，提供詳盡資訊與建議。 (Tànsuǒ gèlèi yǐnshí bǔchōng, bāokuò wēishēngsù, kuàngwùzhí, dàn bái zhì fěn mò jí qítā jiànkāng fǔzhù shípǐn de zīxùn. Zhēnduì bùtóng jiànkāng xūqiú, tígōng xiángjìn zīxùn yǔ jiànyì.)

**Option 3 (Emphasizing Practicality):**

> 本分類提供關於飲食補充的實用資訊，例如如何選擇適合自己的補充品，以及如何安全有效地使用。包括常見的品牌評價和產品比較。 (This category provides practical information on dietary supplements, such as how to choose supplements that are right for you, and how to use them safely and effectively. Includes evaluations of common brands and product comparisons.)

**Translation for WordPress:**

> 本分類提供關於飲食補充的實用資訊，例如如何選擇適合自己的補充品，以及如何安全有效地使用。內容包含常見品牌評價及產品比較。 (Běn fēnlèi tígōng guānyú yǐnshí bǔchōng de shíyòng zīxùn, lìrú rúhé xuǎnzé shìhé zìjǐ de bǔchōng pǐn, yǐjí rúhé ānquán yǒuxiào de shǐyòng. Nèiróng bāohán chángjiàn pǐnpái píngjià jí chǎnpǐn bǐjiào.)

**Key Considerations for WordPress:**

* **Conciseness:** Keep the description relatively short and to-the-point. WordPress displays this information in a limited space in the backend and sometimes on the front end.
* **Keywords:** Try to incorporate relevant keywords like “維生素” (vitamins), “礦物質” (minerals), “營養品” (nutritional supplements), “健康” (health), etc., to improve searchability.
* **Readability:** Use clear and simple language. Avoid overly technical jargon unless it’s essential for the target audience.
* **Relevance**: Make sure the description accurately and concisely encapsulates the content that will be tagged with “飲食補充”.

Choose the option that best fits the content you’re creating and the overall tone of your blog. Make sure the description is understandable but can also effectively describe everything you want to relate to the tag. I recommend testing different variations!