每日口說挑戰 原來是這個原因！為什麼國旗上沒有紫色？ (Why Don't Country Flags Use The Color Purple?)

今日挑戰句子

No countries have purple on their flag because up until the 1800s, purple was worth more than its weight in gold.

沒有國家在國旗上使用紫色是因為，直到 1800 年代，紫色價值比與其等重的黃金還要昂貴。