buttonhole ['bʌtnhəʊl]

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附加级

n. 钮孔，（英）纽孔上的花 vt. 在 ... 上开钮眼 vt. 强留某人谈话

He was wearing a carnation in his buttonhole. 他在扣眼里插了一朵康乃馨。
He had a white carnation in his buttonhole. 他在纽扣孔上佩了朵白色康乃馨。