roundel
柯林斯词典
1. N-COUNT A roundel is a circular design, for example one painted on a military aircraft. 圓形設計
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roundel /ˈraʊndəl/ (roundels)
剑桥词典
- a circular decoration , especially a coloured circle on a military aircraft that shows its nationality
圓形裝飾；（尤指戰鬭機上顯示國籍的）圓形標記 返回 roundel