roundel
柯林斯詞典
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 /?ra?nd?l/ (roundels)
劍橋詞典
- a circular decoration , especially a coloured circle on a military aircraft that shows its nationality
圓形裝飾；（尤指戰(zhàn)鬭機上顯示國籍的）圓形標記 返回 roundel