button-down /'bʌtәndajn/ 📖 中文释义 a. <美>领尖钉有钮扣的,守旧的,温文尔雅的 📘 English Definition(英文释义) s unimaginatively conventionals of a shirt; having the ends of the collar fastened down by buttons ← button weights B 字母词表 button-head capscrew →