Here are a few options for a WordPress post_tag description for “台幣換算”, each with a slightly different focus:

**Option 1: Short & General**

* **描述:** 快速查詢台幣与其他貨幣的匯率換算。 (Quickly look up exchange rates for Taiwanese dollars with other currencies.)

**Option 2: Informative & Practical**

* **描述:** 瞭解即時台幣匯率，以及如何計算不同貨幣之間的兌換價值。 (Learn about real-time NTD exchange rates and how to calculate the value between different currencies.)

**Option 3: SEO-Focused (includes keywords)**

* **描述:** 台幣換算工具，包括美元、歐元、日圓等常見貨幣匯率，方便您快速查詢及計算。 了解台幣兌換相關知識，助您掌握外匯交易。 (NTD conversion tool, including exchange rates of common currencies like USD, EUR, JPY, making it easy for you to check and calculate. Learn NTD conversion-related knowledge to help you master foreign exchange transactions.)

**Option 4: Focus on everyday use**

* **描述:** 輕鬆將台幣轉換為其他貨幣，或將其他貨幣轉換為台幣，方便旅遊、購物及日常消費。 (Easily convert Taiwanese dollars to other currencies, or other currencies to Taiwanese dollars, convenient for travel, shopping, and daily spending.)

**Which option is best depends on your website and target audience.** Consider:

* **Website’s focus:** Is your site about finance, travel, or general information?
* **Target audience:** Are they beginners or experienced users?
* **SEO strategy:** Are you trying to rank for specific keywords?

Make sure to choose the description that best reflects your WordPress post and the information you want to convey to your audience. Good luck!